The correct answer is one main clause.
This means that there is only one verb in the sentence, which in this case is the verb 'was.' Even though drive is also a verb, in this context it is used as an adjective driven (participle form of the verb to drive) and is thus not considered to be a verb. This means that there are no subordinate clauses but rather just one main clause.
Explanation:
this is the summary of the peom sea fever
Is this a multiple choice question? If not, than here is my answer: African Americans was a cause of the Great Migration. Hope I helped.
Autobiography is the word you're looking for.
