EXERCISE CMS 1–2Thesis statements in Chicago (CMS) papers
Example:

Mohandas Gandhi was the leader of the movement for India’s independence from Britain.

Mohandas Gandhi was a successful political leader in large part because of his commitment to nonviolence during India’s struggle for independence from Britain.

The first statement is merely factual, but the second statement is an effective thesis because it makes an assertion about Gandhi’s success that can be supported with evidence.