The Roman engineering achievement that made large public structures possible was A.) the development of concrete.

B.) the development of organized labor.

C.) the development of measuring devices.

D.) the development of advanced math concepts.

Which statement best explainsthe role of government according to john locke

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a.slaves could not be citizens b.non-landowners could not be citizens c.blacks could not be citizens d.all persons born or naturalized in the united states vary differently in citizen status.

How did the magna carta affect the power of the english king? a) it closely linked the king's power to the power of the nobles. b) it weakened the king's power. c) it strengthened the king's power. d) it had no effect on the king's power.