Which of the following best explains why the rhine-ruhr area became a major industrial area?

a. it is centrally located in europe.

b. it has major iron and coal deposits.

c. it has a large population.

d. it has flat land and rich soil.

B.It has major iron and coal deposits.

Rhine-Ruhr became important for industry because of their proximity to raw materials (coal and iron ore) and markets (large concentrations of wealthy European consumers)

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.

b. the american revolution