The first european settlements along the coast of sub‑saharan africa included st. louis, luanda, and lourenço marques (now maputo). from what country did the settlers come?

Portugal

Explanation:

The earliest European settlements along the coast of Sub-Saharan Africa Settlers and explorers where from Portugal for the exploration of oceanic routes and island groups around Africa. The 15th century marks the age and exploration of Sub Saharan Africa, under Henry the Navigator who went to St. Louis, Sunanda, and Lourenco, etc. After which came the Dutch to colonize Africa. The cape code remained under the dutch rule till 1803, after which the Britishers took over from 1806. All these came from European countries and tried to settle in Africa as it was wide and full of resources.

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.