Question

what could be condition if Japan did not attacked American Navy at pearl harbor then.... ​

Answer 1

Answer:

Without the American entry into World War II, it's possible Japan would have consolidated its position of supremacy in East Asia and that the war in Europe could have dragged on for far longer than it did. ... There was no evidence of the Japanese moving toward Pearl Harbor that was picked up in Washington."

Answer 2

then the USA wouldn't enter the war and end it by dropping atomic bombs on the city of Hiroshima and Nagasaki