Why did President Johnson clash politically with the Radical Republicans? A) Johnson was a Democratic President.
B) Radical Republicans felt Johnson was too forgiving to the South.
C) Radical Republicans thought Johnson was too harsh toward the South.
D) Johnson came from a rich family.

the correct answer would be C

Explanation:Johnson wanted Southern to both swear allegiance to the United States and accept the Thirteenth Amendment, which ended slavery and the Radical Republicans wanted full rights for African Americans- is why President Johnson clash politically with the Radical Republicans.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.