Spanish American war
1.Why does the US get involved in the problem in Cuba?

After the U.S. battleship Maine exploded and sank in Havana harbor under mysterious circumstances on February 15, 1898, U.S. military intervention in Cuba became likely. ... That same day, Spain declared war on the United States, and the U.S. Congress voted to go to war against Spain on April 25.

Explanation:

europe would not recognize the confederacy as an independent nation.

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions