16. When did agriculture arise in the Americas? A When the Olmec began farming along the riverbanks of
the Gulf of Mexico
B When the Maya established farming villages
C When the Inuit moved to North America from Asia
When the Aztec came into power in Mesoamerica

In the 1970s in the usa reached zenit point of the 60s "counter culture" movement, which called into question the us's ability to use force overseas and stop communism. this made the us seem less interventionist to many other countries.   the economic power on the other hand was diminished by oil crisis in 1973 when price of oil for barrel had risen from 3 $ to 12 $