In my view the period that has had the biggest impact on the development of US society is The Great Depression. That depression brought a huge economic growth but also changed mass culture that swept many Americans into consumer society.
The answer is gunpowder and square sails
One of the first exchanges, the horse.
As of right now they have a democracy
militarism: Commiting to military
alliances: Friends of countries that help in wartime
imperialism: Desire to colonize, for glory, riches, or global domination
nationalism: Believing in your country's greatness
Japanese Imperialism led to colonizing parts of china, since it was mad at western powers colonizing china and pushing it out (hypocrisy). Italy was a rising economy, but bitter of not getting a fair share of land. German nationalism was at a high as the emerging Nazi (nationalist socialist) party was overturning the inflation ridding weimar republic. The failing alliance of the League of nations was falling apart quickly. Soon Japan, Italy, and germany turned to Imperialism, Fascism, Nationalism, and militarism and the world would find itself in another world war.
