The events at central high school show that

When Central High School was integrated in 1957, black students were subjected to racial epithets and threats from the mob of white people outside the school. The students had to be escorted into the school by armed guards and troops were present at the school throughout the year for their safety. The ongoing threat to their safety indicates that many white Southerners opposed integration, so 'B' is the correct answer.

That president would be none other than president warren g harding , return to say of life before wwi