The industrialization of the United States during the late 19th century was a result of?
A. the growth of powerful labor unions
B. increased regulatory powers of federal government agencies
C. support of isolationism in America
D. the development of transportation and communication systems
PLEASE HELP!

answer; ///i believe the correct answer is the empire state building;

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.