I need help with this please

Which factor best suggests a cause for the urban problems shown in this table? (3 points) increasing discriminatory housing practices shifting population density gradients over time declining urban renewal efforts by city governments declining basic employment sector in industrial cities increasing gentrification efforts in the inner cities

To keep other european powers from threatening its empire in america, spain sent soldiers, settlers, and?

Explain the importance of carnegie, morgan, and rockefeller on the american political scene of the early 1900's.