What was the population of the earth in the stone age?

Principles of cultural identity have been used to justify conflict. true false

The chinese exclusion act was the first significant law restricting immigration into the united states. why do you think the us government singled out chinese immigrants in particular for exclusion?

15 pt (more than one answer)what are some of the ways businesses increased productivity? -obtained new machinery -obtained new resources -obtained new technologies -found ways to make their workers more efficient