What term is used to describe the political party that has the most members in each house of congress

It is called the "majority" for practical and formal purposes.

Explanation:

After a legislative election, the party that has won the largest number of seats in each house of the American Congress is simply called "the majority," and the other party is called the "minority." For example, the leader of the caucus that has most representatives in the House of Representatives is called the "majority leader," and this person comes second to the Speaker of the House, who usually is an influential figure of the majority party.

the best and most correct answer among the choices provided by the question is the second choice "less supportive to the war of 1812"

the war of 1812 was a military conflict that lasted from june 1812 to february 1815, fought between the united states of america and the united kingdom, its north american colonies, and its native american allies.

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