What does daddy harder mean​

Which of these events was a severe setback for the u.s. war effort in the pacific?

At the time of the brown v. board of education decision,schools were segregated everywhere in the country.several states had laws requiring segregated schools.schools in nearly every state has been desegregated.segregation was common in the north, but not in the south.

Wha industry did the refrigerated rail car impact the most