D. they had pyramids and palaces in their centers
Slavery impacted the civil rights movement
The first shots of the Civil War were fired at Fort Sumter.
There are four main types of unemployment in an economy—frictional, structural, cyclical, and seasonal—and each has a different cause. Frictional unemployment. Frictional unemployment is caused by temporary transitions in workers' lives, such as when a worker moves to a new city and has to find a new job.
