Agroup of people united to promote a cause is called a

Caucus is the right answer.

The term caucus in traditional terminology means a meeting of the particular party constituents in a local area, for the intention of nominating applicants for office or for electing representatives to country or state party committees. The caucus is the earliest system of electing representatives in the U.S., widely recognized as beginning in the English colonies prior to the American Revolution.

explanation:

the president, prime minister, chief justice, speakers and ministers take their oath of office. the oath is taken in bengali

your answer would be a) no nation can be economically self-sufficient.

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