Why was Marbury v. Madison an important case? A It was the first Supreme Court case to involve two presidents.
B It was the first case heard by the Supreme Court.
C It was the first unanimous decision by the Supreme Court.
D It was the first time a law was declared unconstitutional.

The correct answer is D. Marbury v. Madison was the first time a law was declared unconstitutional.

Explanation:

Marbury v. Madison was a judicial ruling issued by the Supreme Court in 1803, through which the Supreme Court created the power of judicial review, a legal institute that allowed it to review the constitutionality of government acts and the different laws, thus seeking protect the legal system of the country, to avoid laws or conduct contrary to the Constitution of the United States. In this way, the Supreme Court became the arbitrator that defines the legality of government norms and conduct, becoming the final interpreter of the Constitution.

D. It was the first time a law was declared unconstitutional.

Explanation:

it established the power of judicial review for the U.S. Supreme Court and lower federal courts with respect to the Constitution and eventually for parallel state courts with respect to state constitutions.

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck