0FYK - 2AHV: Konohagakure
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#Konohagakure officially established.
#'Hashirama Senju' elected as 'The Shodai Hokage'
#All the clans working together for the prosperity, stability and unity of Konohagakure.
#Konohagakure inviting more and more clans to join their village.
#Hashirama marrying Mito Uzumaki and forming an alliance with the Uzumaki Clan.
#Mito giving birth to Senju heir.
0FYK - 1AHV: Kumogakure
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#'Ā' unifying the clans of his land and convincing their Daimyō to form their own hidden village 'Kumogakure'.
#He also chose the name of his land as 'The Land of Lightning', upon which their Daimyō began to known as 'Lightning Daimyō' and the leader of their village as 'The Raikage'.
#Ā building Kumogakure and becoming their 'Shodai Raikage'.
#Ā starts a tradition in Kumo for the Raikage to choose a tag-team partner and naming him/her 'B'.
#Ā giving 'Yotsuki Clan' a piece of land in the 'Valley of Clouds and Lightning' in exchange for their loyalty to his village.
#The Head of Yotsuki Clan at that time becoming the personal bodyguard of the Shodai Raikage Ā and later acquires the position of Nidaime Raikage.
1-2 AHV: .Iwagakure and Kirigakure
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##'Ishikawa' unifying the clans of his land and convincing their Daimyō to form their own hidden village 'Iwagakure'.
#He also chose the name of his land as 'The Land of Earth', upon which their Daimyō began to known as 'Earth Daimyō' and the leader of their village as 'The Tsuchikage'.
#Ishikawa building Iwagakure and becoming their 'Shodai Tsuchikage'.
#Ishikawa tells a young Ōnoki about the Iwagakure's 'Will of Stone'.
##'Byakuren' unifying the clans of his land and convincing their Daimyō to form their own hidden village 'Kirigakure'.
((Note:-It seems to be a tradition for the members and aspiring members of the Seven Swordsmen to have sharpened teeth, the only exception being Raiga in the anime. So using this hint, we can say that Byakuren must have also been a member of the Seven Swordsman of the Mist, since he too possess sharpened teeth.))
#He also chose the name of his land as 'The Land of Water', upon which their Daimyō began to known as 'Water Daimyō' and the leader of their village as 'The Mizukage'.
#Byakuren building Kirigakure and becoming their 'Shodai Mizukage'.
#Byakuren creating "The Seven Ninja Swordsmen of the Mist".
{{{{A/N: Byakuren divides the Kirigakure into three categories:-
According to Kahyō, Kirigakure's society was split into a form of caste system since the founding of the village. The highest ranking civilians were those whose family lineage originally stemmed from within Kirigakure, the second caste was for members of families who were allied with Kirigakure on the battlefields in the past while the last and lowest caste consisted of members of the families who were defeated on said battlefields and annexed into the village. From the early days on, the members of the third caste were handled with caution and had to complete the most perilous and dangerous missions for the village — thus keeping them occupied and preventing them from revolting. Source:: NARUTOPEDIA}}}}
##Birth of Hiruzen Sarutobi, Danzō Shimura; Koharu Utatane and Homura Mitokado.
2-3 AHV: Sunagakure
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##'Reto' unifying the clans of his land and convincing their Daimyō to form their own hidden village 'Sunagakure'.
#He also chose the name of his land as 'The Land of Wind', upon which their Daimyō began to known as 'Wind Daimyō' and the leader of their village as 'The Kazekage'.
#Reto building Sunagakure and becoming their 'Shodai Kazekage'.
#Reto establishing the 'Kazekage Clan'.
{{{{A/N: In the anime, according to Hashirama's account, soon after the creation of the title Hokage came the Raikage, Tsuchikage, Mizukage and Kazekage, in that order. Source:: NARUTOPEDIA}}}}
[[A/N: The name of the Elemenatal Nations is based upon two factors:-
i) Weather of their Land
ii) Dominant chakra natures of their Shinobi
For example Shinobi from Land of Fire generally possess Fire Chakra Nature and it has a very bright and warm weather.]]
3-8 AHV: Peace
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#Peace among every nations.
#Every nations working towards developing their own Ninja Villages and inviting more and more clans.
#Hidden Ninja Villages creating different institutions for the smooth working of their villages.
3 AHV: The Five Great Nations and the Five Great Shinobi Villages are established.
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#The Hidden Village system achieving political stability, prosperity, success and becoming permanent part of the society/world.
#Creation of other smaller Ninja villages such as Amegakure, Ishigakure, Kusagakure, Takigakure, Yugakure, Tanigakure, Shimogakure, Kagerō Village, Takumi Village, Nadeshiko Village, Jōmae Village, etc
#Uzumaki Clan terminating their 'Isolation Policy' and working towards creating Uzushiogakure.
4 AHV: Establishment of Uzushiogakure
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Uzumaki clan inviting other clans to form their own hidden village.
5 AHV: Institutions in Konohagakure
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#Creation of Fire Council by Hashirama Senju at the behest of Tobirama Senju's request.
#Creation of Shinobi Council, Shinobi ranks and institutions such as Shinobi training Institutions, etc by Tobirama.
#Creation of Three-man team cells with a Jounin-in-charge.
7 AHV: Creation of ANBU
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The Anbu, short for Ansatsu Senjutsu Tokushu Butai(Literally meaning: Special Assassination and Tactical Squad), are covert operatives of capable ninja that are dispatched by their village leader. They are hand-picked directly by the Kage of their village. There are apparently no true ranks within the Anbu; team leadership and hierarchy seem to be based on merit and experience. The leaders of the teams are called squad leaders (taichō), a position held in high regard. It generally involves the dark side of the Shinobi world. It was CREATED by TOBIRAMA SENJU.
8-12 AHV: Skirmishes at the borders
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All the Hidden Shinobi Villages by now became functional and stable so it brought a race of supermacy. A race to prove which village is the strongest. It led to skirmishes along the borders which became the stepping stone for the 'First Shinobi World War'.
8 AHV: Dissatisfaction in Madara
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#Hashirama wanted for Madara to become the Shodai Hokage but Tobirama convinced Hashirama that people won't accept Madara and he should be the one to take the title of Hokage. Madara overheard all of this and feeling that there is an element of mistrust and that it will only escalate over time until the Uchiha Clan loss their most of the autonomy in the Village.
When Hashirama was elected as Hokage, the ultimate leader of Konohagakure, Madara became very concerned for the Uchiha's future, believing this to be but the first step in the Senju's dominance.
After Hashirama became Hokage, he and Tobirama began to include the Uchiha less and less in matters dealing with Konohagakure. Madara wasn't happy with this and wanted to gain control of the village but all the other Uchiha were happy to be at 'Peace' so they turned on Madara as well. They called him evil and a killer for taking his Brother's eyes(which he only took to better protect the Uchiha Clan), at that point no one trusted Madara anymore. It made Madara despise his own clan. He became more and more dissatisfied with each passing day but still lived and complied the Village, and worked towards it's betterment and protection.
#Ōnoki becomes a Shinobi at the age of 8.
9 AHV: Madara, Mū and Ōnoki
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Madara's idea of peace differed from Hashirama's, where Hashirama envisioned cooperation with the other newly-formed villages, Madara desired control, so that the peace could never be lost. It became evidenced when he attacked Iwagakure's Mū and Ōnoki who came to form an alliance with Konohagakure. He attacked them, to make them submit to Konoha's authority and also to accept Konoha's superiority.
#Birth of Hanzo of the Salamander.
#Birth of Mifune of the Land of Iron.
{{{A/N: I am assuming the age of Mifune and Hanzo same since both had clashed in their Youth. The age of Mifune is described 65 in Naruto Shippūden. So At the time of Hiruzen's death at the age of 69, Mifune's age must have been 62. Therefore both Mifune and Hanzo had an age difference of 7 years in comparison to Hiruzen.}}}
9-10 AHV: Kinkaku Force and Tailed beasts
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#The Shodai Raikage Ā creating Kinkaku Force in Kumogakure after Kinkaku and Ginkaku gained fame as the Gold and Silver brothers throughout the world.
#The five treasured tools have been handed down in Kumogakure since ancient times but they are never used due to the enormous amount of chakra, their usage consumes, so much so that a normal human could die if they used them. The Shodai Raikage Ā eventually gave them to the Gold and Silver brothers after realising that the siblings were probably the only ones capable of wielding the treasures without fatal repercussions, since they already possessed immense chakra reserves and their clan was rumoured to be related to the Sage of Six paths.
#Bunpuku, a young priest and a very powerful fūinjutsu user from Sunagakure manages to seal the Shukaku, the One-tailed beast inside a tea-kettle. Thus, the One-Tailed Racoon known as Shukaku the Sand Spirit fell into the possession of Sunagakure.
#The Shodai Raikage Ā at that time, looking to increase the power of his village believed that Sunagakure possessing a bijū is a sign of strength. So he decides to capture the strongest of all bijū to show the world, the superiority of Kumogakure. He assigns the newly formed Kinkaku Force to capture the Nine-Tailed Demon Fox, but the entire team was defeated during the confrontation and two members of that team, namely Kinkaku and Ginkaku were swallowed whole by the Nine-Tails; thus they ultimately fails the mission. However, Kinkaku and Ginkaku didn't died, they survived by eating the flesh of the bijū, and thrashed inside the his stomach for two weeks, eventually forcing the Nine-Tails to regurgitate them. Upon their escape, they both came out looking like miniature versions of the beast, due to having acquired a portion of the fox's chakra.
10 AHV: Madara deserting Konohagakure.
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Growing dissatisfied with the village, Madara started studying the Stone Tablet that had been in the Uchiha's possession for generations and was brought with them when they settled in Konohagakure. Through careful study, Madara was able to decipher enough of it to learn the history of Shinobi, of the endless cycle of failed peace and the destiny of battle between Uchiha and Senju, but also a means to unify the world and the secrets of the Sharingan like how to control bijū, how to use infinite Tsukuyomi, etc. With this knowledge, Madara decided Konohagakure as a failed experiment. He tried to convince his own clan and even Hashirama of the same conclusion but none would hear him so he chose to abandon the village, with the intention of returning to challenge Hashirama once again with the Nine-Tailed Demon Fox under his control.
11 AHV: Konoha Shinobi Academy
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#The Shinobi Training facility created by Tobirama Senju is officially named Shinobi Academy.
#Danzō Shimura; Koharu Utatane; Homura Mitokado and Hiruzen Sarutobi enters the academy at the age of 9.
#Institutions of Konohagakure becoming largely successful, enough that other hidden villages began to adopt the same organisations.
{{{A/N: Age of each characters may differs like Hiruzen Sarutobi has just entered the academy while Ōhnoki has already faced Madara Uchiha. I will try to keep the ages as close as possible.}}}