What different empires, states, and kingdoms held power in West Africa over the centuries?
what diferent empire, states, and Kingdoms held power in West Africa over the centuries?

Increasing the release of greenhouse gases and pollution

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Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city.