Under normal circumstances, these companies, to show support for charitable causes, would often buy the loans KeyBank provided to those small countries at high prices.
Then, the new creditors would tell those crappy little countries that the contract had loopholes, the repayment deadline was abnormal, and they wanted resources. If there were no objections, the mines would start to belong to American companies for exploitation from that day on. There was no rush if they just wanted to repay the loans because the American creditors were prepared to sue the country first, suspecting that the African officials had intentionally set traps in the contract to cheat the loans. Anyway, the lawsuit would take a long time, and by then, with late fees, interest, and compensation all added up, it definitely wouldn't be a small figure.