Will give brainlest the direct cause of us involvement in wwii was: question 1 options: germany's invasion of poland the japanese attack on pearl harbor sinking of lusitania by germany italian mistreatment of foreign nationals by the us

Supporters of using the atomic bomb at the end of world war ii believed that a japan might win the war if the bomb was not used. b americans were tired of war and the us should end it quickly. c russia was developing a bomb and the us needed to use it first. d japan was developing a bomb and the us needed to use it first.

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

The roman empire created the worlds first