Which of the following scenarios is an example of a trade sanction?
a. the united kingdom places a cap on immigration.
b. australia hosts the summer olympics.
c. the united states purchases foreign oil to compensate for the country's limited supply.
d. the eu refuses to import diamonds from sierra leone due to human rights violations.

The correct answer is D.

Trade sanctions are common mechanisms in international affairs. They are imposed by a country or group of countries that set a penalty on imported products from one or more other nations.

Sanctions aim to force the punished nations to change their behaviour or policies on a certain issue, by limiting their ability to trade with the nation that has imposed the sanction and, in turn, their economic growth opportunities. This is the case of the US and Sierra Leone. The US imposes the sanction aiming to force Sierra Leone to respect human rights in diamond production.

a.) d-day invasion of normandy.

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on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.