Did texas have the right to break away from Mexico? Please help I need to get a good grade on this test

What would lead a historian to consider two events to have a relationship of correlation rather than causation?

Plz where was the inca civilization located? a. in and around the andes mountains of south america. b. central america in southern mexico. c. the caribbean islands. d. the central valley of mexico.

Which of these factors could have influenced the sacco and vanzetti case? check all that apply a. prejudice or distrust toward immigrants b. fear or anarchist violence c. distrust of those who did not seem to fully support the government