Final answer:
Post the Election of 1868, Republicans realized that African American suffrage was crucial for their political success, as evident from Ulysses S. Grant's victory.
Step-by-step explanation:
After the Election of 1868, Republicans reached a decision that supporting the rights of African Americans, including their right to vote, was essential to their political success.
This was a result of Ulysses S. Grant winning the presidency with the aid of the African American vote in the Southern states, where African Americans were a majority.
The Republicans realized that the African American votes, who were loyal to them due to their actions during and after the Civil War, were pivotal.
Hence, the Election of 1868 was a turning point in Republicans' recognition of the importance of African American suffrage in their political strategy.
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