Why did italy abandon its alliance with germany in ww1 and join the allied side?

In duncan v. louisiana, the supreme court ruled that the [blank](fourth, fifth, sixth) amendment could be incorporated to the states. the [blank](equal protection, due process, enforcement) clause of the fourteenth amendment allowed incorporation to take place in this case.

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

Mayan people were known for participating in which of the following activities? road construction stargazing storytelling quipu weaving