Answer:
Spread of communism (The Domino Theory) and its support from China and Russia.
Explanation:
Before the Vietnam war, the United States was very much concern about the spread of Communism in Asia, as they gave it a term of Domino theory. The theory asserted the situation of letting a communist nation to takeovers other neighbouring states and converting it under communism. The U.S. involvement in Vietnam began in 1954, though ongoing conflict in the region of North and South.
Russia assisted China in spreading communism in Asia which also became one of the reasons for the United States to refuse to withdraw from the Vietnam conflict.
If the President, VP and Speaker of the House is unable to serve by death, incapacitation, impeachment, etc...the President Pro Tempore of the Senate will be the successor of the United States.
The answer to the question is A. sequences of comparable events
Answer:
Majority leader.
Explanation:
The Majority leader is the head of the Senate. He is designated by a vote of the party senators who are in majority in the Senate. He opens and ends sessions, he controls the parliamentary agenda. Nevertheless, the function of president of the Senate belongs to the vice president, he may join the sessions and vote. The majority whip is the second-in-command, so to speak, of the majority party in the Senate, the immediate leader of all his or her fellow party senators.