Answer:
Fifteenth Amendment, amendment (1870) to the Constitution of the United States that guaranteed that the right to vote could not be denied based on “race, color, or previous condition of servitude.” The amendment complemented and followed in the wake of the passage of the Thirteenth and Fourteenth amendments, which abolished slavery and guaranteed citizenship, respectively, to African Americans. The passage of the Fifteenth Amendment and its subsequent ratification (February 3, 1870) effectively enfranchised African American men while denying the right to vote to women of all colors. After the Civil War, during the period known as Reconstruction (1865–77), the amendment was successful in encouraging African Americans to vote. ... Many African Americans were even elected to public office during the 1880s in the states that formerly had constituted the Confederate States of America.
Explanation:
An abundance of natural resources including Salt and Gold minerals.
The best answer is A.
Popular sovereignty was a doctrine under which the status of slavery could be determined by the settlers themselves. Although the doctrine won wide support as a means of avoiding conflict over the slavery issue, its meaning remained rather ambiguous since those who supported it disagreed as at what stage as territories developed should the decision be made.
A. Douglas, a main promoter of the doctrine, wanted the choice to be made at an early stage of settlement, while others felt that it should be made just before each territory achieved statehood. It was first proposed by vice president George Dallas in 1847 and popularized by Lewis Cass in 1848.