You are posting nonsense. read the thread, it's all been explained.
Here is some reading for you.
An overview of the realignment of the Republican Party and Democratic Party and how they flipped ideologies of liberal and conservative over the course of US History.
www.studentsofhistory.com
This article examines the shift in the Democratic and Republican parties with regard to the rights of African Americans. Debunking partisan distortions of history on both sides, "When Parties Swap Platforms" demonstrates that prior to the 1960s, the Republican Party was more supportive of...
digitalcommons.kennesaw.edu
Today, Black Americans are the strongest Democratic constituency and White Southerners are the strongest Republican group—but it used to be the other way around.
www.niskanencenter.org
I don't really expect you to read any of them, but ya gotta try to help where you can, right?