What was the difference between the two parties? Wikipedia says that the Republican Party was made up primarily of Americo-Liberians who had mixed African and European ancestry. I assume the TWP was too, so that's not different. What is known about the Republican Party other than it was Americo-Liberian, had a couple of presidents, and that it ceased to exist early in Liberia's history?
It's possible I misunderstood what the Wikipedia article said: according to a google book search, the True Whig Party was the political organisation of dark-skinned Americo-Liberians, who were believed to be of 100% African ancestry.
It seems the Republican Party was the party of light-skinned, apparently mixed race Americo-Liberians, who were called mullato people at the time.
The source is below, any other information would be welcome.