When Language born simultaneously Human's thinking abilities also increased day by day. From there human started to cultivate crops and he also hunting his prey for survival.
when crops are being cultivated it's considered as the biggest asset for a man and his family. To avoid Foreign invasion in terms of war and to protect people, So all the people Started to give the solution that a government should be formed in form of a "The Kingdom" and the kingdom should serve for people and protect the people and do the welfare for the people.
People should pay for the government for do the welfare and development for the landscape.
This forms a kingdom.