The movement of wet soil and rocks down a slope is called a mudslide
Power distributes among a few groups.
According to sociologist Wright Mills, who wrtote book The Power Elite in 1956, there is six groups: presidents of the most important companies, landowners, military officers, U.S. federal government, media personalities and notable local families.
In Sub - Saharan trade, gold , salt and slaves were the most important commodities.
Gold came from Bambuk in the valley of the Senegal where there was a lot of alluvial gold. Rock salt came from areas in the Sahara which were once covered by inland seas. Its extraction, in large blocks under the blazing sun, was appalling work carried out by slaves.
Slaves mainly came from around the region of Lake Chad, where the Zaghawa tribes made a habit of raiding their neighbors and selling them to Arab purchasers in the north.
Other important commodities were cola nuts, dates, copper and brass.
Population education is multidimensional because it effects all aspects of life - birth, death, migration, health status, employment status, economic status, housing and other issues. It is always changing, and you need to understand how it is changing to understand the issues of the day.
