the united states formally entered world war ii following the japanese attack on\nnanjing\nindochina\npearl…
the united states formally entered world war ii following the japanese attack on\nnanjing\nindochina\npearl harbor\nthe philippines
Answer
Brief Explanations:
On December 7, 1941, Japan launched a surprise - attack on the U.S. naval base at Pearl Harbor in Hawaii. The next day, the United States declared war on Japan and formally entered World War II. The attack on Nanjing was a Japanese atrocity in China, the occupation of Indochina was part of Japan's expansion in Southeast Asia before Pearl Harbor, and the attack on the Philippines came after Pearl Harbor as part of Japan's further expansion in the Pacific.
Answer:
C. Pearl Harbor