C-Sinking of the uss maine, delome letter, desire for raw materials.
Explanation:
The American "yellow press" had been building public opinion support for an intervention by publishing shocking and alarming stories about the abuses and cruel treatment of the Cuban population by the Spanish authorities (which were true, an independence war was being fought in 1898 on the island). Worried about important American investments, the government sent the USS Maine to Havanna to protect them and US citizens. In a very dark incident, it blew off in the Havanna harbor.
US businesses had gone global. There was already an industrialized economy that demanded more raw materials and new markets for expansion.
All of these are reasons for the US getting involvement in the Spanish-American War.
they would play a valuable role in the war by tipping the balance of power in favor of one of the European empires. British policies that came out of French and Indian War like taxation and land treaties would spark the American Revolution.
The 1918 pandemic manifested as 3 distinct “waves,” with the first in the spring of 1918, the second in the fall of 1918, and the third in the winter of 1918–1919 (Table and Figure).