Which shows a major change from early settlements to complex societies? The trade or barter system disappeared under the growth of complex societies.
Animism became the main religious practice as villages became complex societies.
Specialized skilled workers became obsolete as complex societies grew and traded with neighbors.
O Clan or family leadership evolved to village or town leadership, which made laws and maintained order.

the answer is states.

oil! is what i am assuming

the correct answer is b, "fertility rates are increasing, so populations will grow more quickly in the future."

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.