Match each item to the time it best represents. 1. humans began using stone tools
2. birth rates declined, and the average life expectancy increased
3. the world population totaled six billion people
4. the annual population growth rate reached its peak

the late 1960s
Industrial Revolution
Paleolithic Era
1999

Iam not here to cheat, i just need to check my answer. how were incan commoners grouped within their social class? a. by gender and age b. by family rank c. by wealth and status d. by religious worship my answer is c. i believe this because slaves are at the bottom of the rank, whilst the emperor is above all.

Which of the following descriptions is an example of the curtual diffusion

1. which of the following best explains why president roosevelt proposed his 1937 “court-packing” plan? a. he argued that more juries were necessary to hear challenges to the new deal. b. he wanted to add to the supreme court more justices who supported the new deal. c. he argued that the supreme court lacked the authority to overturn new deal programs. 2. the federal deposit insurance corporation (fdic) was created primarily to address which problem? think of where deposits are made. a. the widespread bank failures that resulted from bank runs b. the freezing of credit that resulted from high unemployment c. the increase in personal debt that resulted from rising food prices