The still in full force until pearl harbor was the The great depression Option(b) is correct.
What was the Pearl harbor?
The assault on Pearl Harbor was an unexpected military strike by the Imperial Japanese Navy Air Service upon the United States against the maritime base at Pearl Harbor in Honolulu, Territory of Hawaii, not long before 8:00 a.m., on Sunday, December 7, 1941.
Japan expected the assault as a preventive activity. Its point was to keep the United States Pacific Fleet from slowing down its arranged military activities in Southeast Asia against abroad regions of the United Kingdom, the Netherlands, and those of the United States. Throughout the span of seven hours there were composed Japanese assaults on the US-held Philippines, Guam, and Wake Island and on the British Empire in Malaya, Singapore, and Hong Kong.
Japan reported statements of war on the United States and the British Empire sometime thereafter (December 8 in Tokyo), yet the announcements were not conveyed until the next day. The British government announced battle on Japan following discovering that their domain had additionally been gone after, while the next day (December 8) the United States Congress proclaimed battle on Japan.
Therefore Option(b) is correct.
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