What are you views/opinions on how america handled its acquisition of the various territories from the late 1800's until 1914?

The detail is given below:

Explanation:

In the late 1800's America acquired three territories. That was Louisiana Purchase from France, Florida purchased from Spain and Texas annexation. They provided defense and financial assistance to handle the territories.

In the beginning, it seemed well off but started vanishing later on due to the non-assistance of the military of America. Likewise, the Spanish-American war also ended the Spanish colonial empire, this is how they ended each other territories.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).