South Asia. this is correct
B. China’s nationalist government collapsed after a war with European armies.
The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of poorer record of fossils than that of the succeeding Phanerozoic eon.This is because many Precambrian rocks have been heavily metamorphosed,obscuring their origins,while others have been destroyed by erosion,or remain deeply buried beneath Phanerozoic strata.The Phanerozoic Eon covers 541 years to the present while Precambrian Eon covers 4.6 billion years.
The working together of political opponents during the aftermath of the War of 1812 was a sign of the Era of Good Feelings. The Era of Good Feelings was a time period in American history where there was a sentiment of national purpose and a desire for unity after the Americans came out victorious from the War of 1812 and finally felt fully in charge of their own country.
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