why did the post WW1 years bring economic growth and cultural revival as well as tension and conflict

Explanation:

both sides were taught to hate the other side including the color of their skin and both were taught to tell the government that they were treating the prisoners good but really they beat them.

candlelight and moonlight

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by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.