Evaluate the relative importance of different causes for the expanding role of the United States in the world in the period from 1865-1910

In the aftermath of the war, internationally the world was changing, Europe was slicing up Africa, many countries started fighting for their independence, and the fight for influence and money ensued between the most powerful nations. During the time periods of 1865-1900, the US sought to keep up with Europe and expand its sphere of influence in the world under the leadership of Roosevelt, McKinley and other presidents.

can you post options?

both include an amendment process.