In 1969, Zambia was a middle-income country, with one of the highest standards of living in Africa. By 1991, 68 percent of Zambians were unable to meet their "basic needs" of housing and food. What happened? Group of answer choices Zambia's economy was oriented around copper mining and exports. When the world price of copper bottomed out, Zambia lost its main source of income. Zambian leaders embraced a Marxist program of socialist development. They rejection of the free market led to lagging economic growth. French businessmen help control over Zambia's currency and due to growing anti-French sentiment, they devalued the currency, leading to mass poverty. A civil war decimated local economies and led to an massive migration of refugees