Question

What was the main cause that triggered U.S. involvement in WWI?​

Answer 1

Answer:

The real causes of World War I included politics, secret alliances, imperialism, and nationalistic pride. However, there was one single event, the assassination of Archduke Ferdinand of Austria, which started a chain of events leading to war.

Explanation:

Answer 2

The US got involved in WW1 because Germany sank and damaged many U.S ships traveling to Britain.