According to Alexander Decode , the Spanish American War was a turning point in American foreign policy history because it marked the beginning of USA's imperialism.
Explanation:
Until the time of the Spanish American war US had been rather dormant on the world stage and was not invoked in conflicts for land that was the norm for other nations .
It had just now begun to come to terms with its own colonial past and had now began to emerge as a self asserting nation.
After the win in this war it was seen that the US began a policy of taking over other lands and began its own form of imperialism to suit its interest like other powers in Europe.
