In January 2023, China introduced a quota on imports of crude oil into the country.
Using the diagram below, draw the effects of the introduction of the quota on the equilibrium price and quantity of crude oil in China. Label the new curve, the new equilibrium price and the new equilibrium quantity.

The African Continental Free Trade Area (AfCFTA) is a free trade area that includes most of Africa. It connects 1.3bn people across 55 countries with a combined gross domestic product (GDP) of $3.4 trillion. South Africa is an important member of the AfCFTA.
With reference to the data above and your knowledge of economics, analyse the disadvantages to firms in South Africa of being a member of the AfCFTA.
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