While researching a history paper, you see a graph that shows federal spending on defense in the past 200 years. You notice that federal spending throughout the late 1900s shows much more spending on defense than in previous decades. What development most likely caused
this sustained increase in US peacetime defense spending?

The Cold War

Explanation:

The USA was trying to out-develop the USSR and its allies with military technology.

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lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.