What were some of the Ideological, Religious, Economic, and Military factors Motivating American Imperialism during the late 19th Century

Describe the term “imperialism.”  What were some of the ideological, religious, economic, and military factors motivating American imperialism during the late 19th century?  What were some of the big events that led to the creation of America’s overseas empire during this period? Please do this within 2-3 paragraphs