Question

select the dependent clause. after francis scott key witnessed an intense british attack on fort mchenry during the war of 1812, he wrote the words to \the star-spangled banner,\ the national anthem of the united states of america.

Explanation:

A dependent clause is a group of words that has a subject and a verb but does not express a complete thought and cannot stand alone as a sentence. In the given sentence, "After Francis Scott Key witnessed an intense British attack on Fort McHenry during the War of 1812" has a subject (Francis Scott Key) and a verb (witnessed) but it is a subordinate clause (starts with the subordinating conjunction "after") and does not express a complete thought on its own. The other part "he wrote the words to 'The Star - Spangled Banner,' the national anthem of the United States of America" is an independent clause as it can stand alone as a complete sentence.

Answer:

After Francis Scott Key witnessed an intense British attack on Fort McHenry during the War of 1812