The Republican Party, early named Liberian Party, was a political party founded soon after the establishment of Liberia in 1848. It was known to be made up primarily of Americo-Liberians who had mixed African and European ancestry. Its main opponent was the True Whig Party.
The True Whig Party was made primarily of Americo-Liberians.
It doesn't say what the Whigs were made of. I think using some same words of the original text helped fool the AI.