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."
(It gave African American men a voice in government.)
He modernized the Russian Navy. At the time, Russia's navy and military were falling apart but Peter the Great was able to turn it around and invade neighboring countries so that Russia would be able to use the Black Sea and many other valuable shipping ports.
Answer:
In that case, the Court ruled that the 1923 Texas state law was unconstitutional, because it allowed the state Democratic Party to racially discriminate. After the case, most Southern states ended their selectively inclusive white primaries.