Maya because of the time the tribes, and revolutionizing Into the Aztecs
The main failure of the Articles of Confederation was that it gave too much power to the states, basically the states were all divided into their own governments. The national government have too little power and couldn't properly control the states. The US Constitution was created to balance out the powers between state and national government.
The answer should be the moment inpacked a lot of people the way they lived and how they survived
It would be the marvelous Roman Empire
Japan aggressively expanded the territories under its influence, taking over parts of China, invading territories claimed by the Soviet Union, and fighting across the Pacific during World War II.