Answer:
A
Explanation:
Since All other answers Talk about The Soviet union, When in the last statement in the timeline it says "The soviet Union Falls apart"
"The South had more immigrants in large cities" was not a reason for the growing division between North and South after 1820, since the North had far more immigrants.
The right answer is Immediately following World War I the economy in the United States Prospered.
The United States emerged from the Second World War as the world’s pre-eminent military and economic power. While much of Europe and Asia struggled to recover from the horrific devastation of the war, the United States emerged unscathed, its economic infrastructure intact and operating at peak efficiency. In 1945, the United States produced half of the world’s manufactured goods. American capitalism not only demonstrated its economic strength after the war, but it also became a dominant force around the world as well. The decades following 1945 were an “American Age” not only because of the nation’s military power but also because of the global influence of American capitalism and consumerism.
