<span>Migration is the movement of people from one place to another, due economic, social, political or environmental reasons. Due to this America has advanced as migrants have migrated with skills, knowledge and resources which have benefited the country. Western invasion has also brought about such benefits. Both western migration abd western invasion can be lengthy processes, supported by lots of planning and preparation, however they can also be fast acting.</span>
Answer:
the protections of the hills and mountains
Explanation:
In the 1500s, a complex change community connected Europe, Africa, and Asia. a good deal of this change was surpassed via the Arabian Peninsula in the center East. Ships from China and India brought their cargoes of spices, silks, and gemstones to ports at the purple Sea.
The trade routes of ancient Africa played a crucial position within the financial system of many African Empires. items from Western and important Africa have been traded to far-flung locations like Europe, the center East, and India. the principal items traded were gold and salt.
The slave exchange had devastating results in Africa. monetary incentives for warlords and tribes to interact inside the slave alternate promoted an ecosystem of lawlessness and. Depopulation and a continuing worry of the captivity made economic and agricultural development almost not possible all through plenty of western Africa.
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