Question

explain in one to two sentences how us involvement in the spanish-american war represented a shift from isolationism to intervention

Answer 1

The main way in which the US involvement in the spanish-american war represented a shift from isolationism to intervention is that this was the first time the United States had really committed troops and resources to a war that had seemingly no effect on the expansion of US borders. It was more done out of altruism. 

Answer 2

The United States intervened between Spain and its colonies and was able to take control of those territories from the Spanish. The Spanish-American War established the United States as a real world power on the international stage.