In biological terms, this effect would be<u> "diffusion".</u>
Diffusion is a spontaneous movement of particles from a territory of high focus to a zone of low fixation. (ex. tea seasoning moving from a zone of high to low fixation in heated water.)
Diffusion predominantly happens in gaseous state or inside gas atoms and fluid molecules.(e.g. The particles of 2 gases are in steady movement and if the layer isolating them is evacuated the gases will blend due to arbitrary speeds.)
It took that long because there was a war between protestants and christians following Luther's writing of the 95 theses which was very gruesome. After this war subdued, the church was finally ready to accept peace.
Answer: The SNCC, or Student Non-Violent Coordinating Committee, was a civil-rights group formed to give younger Black people more of a voice in the civil rights movement. The SNCC soon became one of the movement's more radical branches.