Which technological advance allowed cities to expand outward?
a) building of urban skyscrapers
b) the inclusion of neighborhood parks
c) forms of electric urban transportation
d) increased efficieny of the printing press

which statement best describes the government outlined in the united states constitution?
a) the president is given unlimited power.
b) national power is guaranteed by article four.
c) the power of a one-house congress is provided by a bill of rights.
d) power is divided among legislative, executive, and judicial branches.