After many fights, the slaves were declared free citizens in America in

These priceless mines are in Zambia and Zimbabwe.

The agricultural products that are exported to Europe.

Chocolates are made of these

The acting managers of palm oil plantations in Nigeria were the

Nigeria got Independence from the British.

This mineral is more in Africa.

The main natural resource in Algeria.

The companies established control over the oil mining and refining in Nigeria.

Nigeria started exporting mineral oil in the year