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.
France, Belgium, Sri Lanka, Denmark and Japan are the five nations with
a multiparty system of government. Most of the multiparty systems comprises some
center parties, which have moderate views few, a few right-wing parties, which
support conservative views and left-wing parties, which hold liberal views.
I think a or c but if it is worg i will come back in see
Expect a voice in their Government.