GENERAL KNOWLEDGE

Detailed explanation-1: -On December 7, 1941, following the Japanese bombing of Pearl Harbor, the United States declared war on Japan. Three days later, after Germany and Italy declared war on it, the United States became fully engaged in the Second World War.

Detailed explanation-2: -Roosevelt. Following the U.S. declaration, Japan’s allies, Germany and Italy, declared war on the United States, bringing the United States fully into World War II.

Detailed explanation-3: -World War II Japan attacked the American navy base at Pearl Harbor, Hawaii, on December 7, 1941. In response, the United States declared war on Japan. Japan’s Axis allies, including Nazi Germany, declared war on the United States days after the attack, bringing the United States into World War II.