What is the best explanation for the population growth shown in the graph?
a.) cities provided better entertainment and cultural opportunities.
b.) cities were more sanitary and healthy environments than farms.
c.) an agricultural revolution meant there was more food available.
d.) better mining techniques increased the demand for coal.

In 1819, what did the united states obtain from spain for $5 million?

Which statements explain reasons why unconformities occur? check all that apply. rocks along a fault break and move. igneous rock forms at earth’s surface. rocks erode and sediment is deposited. no sediment is deposited over a long time. igneous rock forms between sedimentary layers.

Which of the following scenarios best shows the relationship between personal and civic responsibility? tara stays home on friday night to babysit her sister instead of going to a movie with her friends. theo asks neighbors to sign a petition asking the city council to lower the speed limit in their neighborhood to make it safer for children. natalie watches a presidential debate with her parents in order to complete a homework assignment for school. nick’s scout troop adopts a section of highway in their community to keep free from litter.