The 15th Amendment to the Constitution granted African American men the right to vote by declaring that the "right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude."
Answer: its geography
Jared Diamond’s theory consists of his belief that geography had a crucial effect and a bigger influence in the world and their economies than any other factor like beliefs and government.
According to him, Europeans became accidental conquerors because of its geography.
They compare and contrast the ideas from multiple resources.