American expansion abroad was fueled by all of the following except "the closing of the frontier" since this was mainly a domestic issue.
Answer:
The brief war fought against the Spanish Navy and land forces in 1898 established the United States as a global, major navy and military power.
The war was fought in Cuba - the Caribbean - and in the Pacific. If a century before American governments were not willing to join wars among European powers and pursued a cautious diplomacy, full industrialization, territorial expansion and a fantastic growth of economic might made the United States a player in world affairs to be reckoned with a century later. That´s why the Spanish-American war is a turning point in American history: the US would play a large role in world affairs from that moment on.
B: The Federal Government needs to respond quickly.
Congress needs to go through a long and careful process to get things done, not to mention them needing to have the majority of congress agree.
The president/executive branch of the government is made up of much less people, as well as the president himself being commander and chief of the military.
Time is very important during a national emergency, and the president can get things done quickly.
Hope this helps.
1.Diaz's regime declines.
2.Pouplar discontent.
3.Rises of new generation of potential leaders.
4.Centennial and presidential election $party
I give u 4!