According to Roosevelt is his "Fireside Chat #19", the effects of Japan's attack on Pearl Harbor were that many American warplanes were destroyed.
Pearl Harbor is a United States naval base near Honolulu, Hawaii. Pearl Harbor attack was perpetrated on December 7, 1941. It marked a surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu Island, Hawaii, by the Japanese that precipitated the entry of the United States into World War II.
Answer:
Large numbers of sailors & soldiers were killed
Explanation:
a p e x
