What is the sentence structure of, "Although he was drafted into the Vietnam War, Muhammad Ali refused to fight."?

1 Answer

The sentence is a compound sentence, a sentence made up of two independent clauses.

Explanation:

An independent clause is a complete thought that can stand on its own (a complete sentence). The two independent clauses are:
-- He was drafted into the Vietnam War.
-- Muhammad Ali refused to fight.

The word 'although' is a conjunction that joins these two independent thoughts (sentences), even though it begins the sentence.