13th, 14th,and 15th amendments helped African Americans gain full rights of citizenship.
Answe
Immediate Cause: Assassination of Archduke Franz Ferdinand
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, and nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary.
Explanation:
Following its ratification by the requisite three-fourths of the states, the 15th Amendment, granting African-American men the right to vote, is formally adopted into the U.S. Constitution. Passed by Congress the year before, the amendment reads, “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.” One day after it was adopted, Thomas Peterson-Mundy of Perth Amboy, New Jersey, became the first African American to vote under the authority of the 15th Amendment.
(It gave black men "previous slaves" the right to vote)
President Johnson was not very concerned with Confederates. He also agreed with racism. While he was in office,discriminating laws were passed . Grant forgave Confederates but also wanted civil rights for black people. He passed laws that attacked the KKK.
Reagan flexed our power abroad and regained our standing as a nation that people don't **** with, in addition to presiding over an economic boom at home.
Nixon reopened relations with Communist China.