Francesco de Melzi was an Italian painter...He was basically Leonardo Da Vinci's favorite student and life companion.
The answer is: B) Cars made it convenient to commute between cities and suburbs
Urban sprawl refers to the process of people moving from highly populated area into a more populated area.
Many workers in the city decided to do this by buying a house in suburban area and commute to their workplace every day.
Cars are considered to be a popular option for the to commute. If they commute by train or bus, They're restricted to a certain schedule that might not be convenience to them. Using cars enable them to commute whenever and wherever they want.
The principal reform called for, is the elimination of the national origins quota system and the overview of numeric limits on immigration from the western hemisphere laterally with the strong claim for immigrant workers by the US employers led to rising numbers of unauthorized immigrants in the united states in the decades after 1965 especially in the southwest. Policies in the immigration and control act 1986 that were intended to curtail migration across the mexican united states border ran many unofficial workers to settle lastingly in the united states. The demographic trends developed a central part of anti-immigrant activism from the 1980s prominent to greater border militarization rising hesitation of migrants by the border patrol and a focus media on the theoretical criminality of immigrants.