Culture, legal reasons, and/or a business case
At the turn of the 20th Century, the United States was on the rise.
Spain was the last remaining European power in the Western Hemisphere and the US was eager to prove it was top dog.
So, it went to war to kick Spain out of the Western Hemisphere.
It was very much looking for an excuse to fight Spain.
Answer:
Great Britain entered World War I on 4 August 1914 when the king declared war after the expiration of an ultimatum to Germany. The official explanation focused on protecting Belgian neutrality; the main reason, however, was to prevent a French defeat that would have left Germany in control of Western Europe.
hope this helps , have a good day , peace
Explanation:
Mexican Cession. Mexican Cession lands were captured in the Mexican–American War in 1846–48, and ceded by Mexico in the Treaty of Guadalupe Hidalgo, where Mexico agreed to the present Mexico–United States border except for the later Gadsden Purchase.
Bloodies battle is: battle of Sharpsburgh