The US never wanted to join World War II so they isolated themselves from everything that was going on and tried to stay neutral (Over time, we sided with the Allies). Mainly, we entered due to the Japanese attack on Pearl Harbor. After the bombing, the US decided to declare war on Japan. Soon after, Nazi Germany's leader declared war on the US and then the US was officially in the war.
So, all in all, it was the bombing of Pearl Harbor on December 7, 1941.
Hope this helps :)
1896?
The United States presidential election of November 3, 1896, saw Republican WilliamMcKinley defeat Democrat William Jennings Bryan in a campaign considered by historians to be one of the most dramatic and complex in American history
The best description regarding the impeachment process as defined by the U.S. Constitution would be that "<span>B. The House of Representatives removes a sitting president from office by a two-thirds majority," since this process has to begin and end in the House. </span>