I think the answer is (B. Vocation) [UnSure]
A mass extincrion. It wiped out 95% of marine life and 70% of land life.
Answer:
Specialized skilled workers became obsolete as complex societies grew and traded with neighbors.
Explanation:
Because The trade or barter system disappeared under the growth of complex societies did not disappear.Animism became the main religious practice as villages became complex societies this did not happen poly something became main religion. Clan or family leadership evolved to village or town leadership, which made laws and maintained order this also did not happen.
During the Freedom Summer campaign of 1964 in Mississippi the three civil rights workers were found dead.
Freedom Summer constituted a 1964 voter registration project in Mississippi, part of a fight by civil rights groups including the Congress on Racial Equality (CORE) and the Student Non-Violent Coordinating Committee (SNCC) to expand black voting in the South. The goal was to increase black voter registration in Mississippi, so that, the Freedom Summer workers included black Mississippians and over 1,000 out-of-state, most of them white volunteers.
The United States did not send aid to "Iraq" during this period since relations between the US and Iraq were extremely poor, especially after Iraq invaded Kuwait.