No main purpose was fur trading
Alfred Nobel is best known for his invention of dynamite and an explosive device called a blasting cap
DURING RECONSTRUCTION, African Americans had the right to vote! Yay! (B is incorrect.) Due to the sheer numbers of African American voters, African Americans often won political office throughout the South--a big change from before! A is correct!! Keep in mind that while African Americans were elected in the North, the question asks about African Americans in the SOUTH (C is incorrect). Also, minimum wage didn't exist in the United States at the time (D is incorrect).
Answer: A