A consumer is someone who purchased goods or services. So if people stop buying that certain good or service. Then the economy can go down because there won't be as much money coming in as there was. And then if people buy more of a certain good or service then the economy will go up because they'll be receiving more money.
I hope this helps.
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It is absolutely vital for historians to understand the cause and effect relationship between events in history because this helps to explain why the events happened in the first place
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He encouraged foreign traders to trade along the East Coast of Africa. He wrote introductory letters to the traders to the interior. He signed trade agreements with Europeans and U.S.A. to encourage foreign trade. He provided security for slave traders hence intensified trade with the outside world. He invited Indiana Banyans to settle along the East African Coast and trade. He established plantation agriculture which produced commodities for international trade. He created political stability along the East African Coast which created conducive environment for trade.