Andrew Carnegie was a poor immigrant; however, he later became a millionaire in the steel business. a. Conjunctive adverb b. Coordinating conjunction c. Subordinating conjunction

The answer is letter a. Conjunctive adverb.

Explanation:

Adverbs are words that modify a verb, an an adjective or another adverb. It can also be used to modify a clause or a sentence.

In the example sentence above, "Andrew Carnegie was a poor immigrant; however, he later became a millionaire in the steel business," "however" functions as a "conjunctive adverb."

Conjunctive adverbs are adverbs that are used to connect two independent clauses (can stand alone) together. Examples of these are: therefore, otherwise, next, however, nevertheless, then, finally, etc.

Going back to the sentence above, the two independent/main clauses are: "Andrew Carnegie was a poor immigrant" and "he later became a millionaire in the steel business."