related to the Geography of the U.S. The social divisions that widened the dichotomy grew out of the geographical differences.
Humans were being humans as is still the case. The constant fight for ascendancy is an ancient survival instinct.
When the Republican Party was formed in 1850's, they immediately looked for and found untenable divisions. Their strategy gave them control of the American Government until the great depression of the 20th Century. Their next opportunity to exploit
divisiveness was after the civil rights act. Their "Southern" strategy paid off for them and continues to do so.
The closing lines of Senator's campaign speech in South Carolina this week a fervent plea for us to not allow our differences to blind us to the fundamental needs of good, honest government. He knows his American History and doesn't want us to continue to be victimized by the 150 year Republican strategy of divisiveness.
If the American People fully understood the basic inhuman, criminal nature of Republican ideology. the Republican Party would
atrophy quickly.