What prompted the united states to enter into an all-out war in vietnam?

Pretty sure because of the containment policy, stop the spread of communism. Vietnam was becoming a communist country and the US was not going to let that happen. Sorry if this is wrong, APUSH was last year.

Constitutional Monarchies:

-Jordan

The system of government of Jordan is a constitutional monarchy with a bicameral National Assembly, composed of the House of Representatives, of 150 seats, 27 by vote of national circumscription with proportional formula and 123 by system "one man, one vote", and the Senate, of 75 members appointed by the King. The King and his Council of Ministers shape the Executive Power, and the King must approve all laws. However, their veto power can be nullified by 2/3 of the two houses of the National Assembly.

-United Arab Emirates

The United Arab Emirates form a federation of seven states, each ruled by its emir (nobility of sheikhs) with specific powers. The central government is formed by the supreme council, formed by the seven emirs. The country's president is usually the emir of Abu Dhabi, and the prime minister, the emir of Dubai.

-Kuwait

Kuwait is a constitutional monarchy with a parliamentary system of government and its economic and political capital is the city of Kuwait.

Absolute Monarchies:

-Qatar

Qatar is an absolute monarchy that has been ruled by the Al Thani family since the mid-nineteenth century. Its Constitution does not provide for the creation of political parties, but recognizes the right to freedom of expression and association, the right to a fair trial, and enshrines freedom of worship.

-Oman

Oman is an absolute monarchy in which the Sultan of Oman exercises absolute authority, but his parliament has some legislative and supervisory powers.