Describe American intervention in El Salvador describe American intervention in Grenada
describe American intervention in Lebanon

The United States contributed to the conflict by providing military aid of $1–2 million per day to the government of El Salvador during the Carter and Reagan administrations and provided significant training. The Salvadoran government was considered "friendly" and an ally by the U.S. in the context of the Cold War.

The United States invasion of Grenada began at dawn on 25 October 1983. The U.S. and a coalition of six Caribbean nations invaded the island nation of Grenada, 100 miles (160 km) north of Venezuela. Codenamed Operation Urgent Fury by the U.S. military, it resulted in military occupation within a few days.

American intervention in Lebanon

Following Israel's 1982 invasion of Lebanon, the advocates of military intervention won out. ... But by 1984, terrorist attacks, a lack of diplomatic progress, and congressional opposition led President Ronald Reagan to withdraw U.S. forces from Lebanon.

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the answer for 3 is b and the answer for 4 is d

answer: a parliamentary system is a system of democratic governance of a state where the executive derives its democratic legitimacy from its ability to command the confidence of the legislature, typically a parliament, and is also held accountable to that parliament. in a parliamentary system, the head of state is usually a person distinct from the head of government. this is in contrast to a presidential system, where the head of state often is also the head of government and, most importantly, the executive does not derive its democratic legitimacy from the legislature.

countries with parliamentary democracies may be constitutional monarchies, where a monarch is the head of state while the head of government is almost always a member of parliament (such as the united kingdom, denmark, sweden, and japan), or parliamentary republics, where a mostly ceremonial president is the head of state while the head of government is regularly from the legislature (such as ireland, germany, india, and italy). in a few parliamentary republics, such as botswana, south africa, and suriname, among some others, the head of government is also head of state, but is elected by and is answerable to parliament. in bicameral parliaments, the head of government is generally, though not always, a member of the lower house.

parliamentarianism is the dominant form of government in europe, with 32 of its 50 sovereign states being parliamentarian. it is also common in the caribbean, being the form of government of 10 of its 13 island states, and in oceania. elsewhere in the world, parliamentary countries are less common, but they are distributed through all continents, most often in former colonies of the british empire that subscribe to a particular brand of parliamentarianism known as the westminster system.

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