When american buy german cars, americans are _ these cars

when American buy German cars, Americans are Importing  these cars

Explanation:

When an American buy a good or a service from any other country on earth the American Consumer is importing the good or service bought.

The import is the purchase of a good or a service that is not produce locally. While the export is the contrary, meaning the selling of a product or a service in another country different than the local.  

The difference between the total amount of money spend in exports less the total amount of money invest in imports is called the Trade balance. This is an important component of the Gross Domestic Product, which is an index that measures the development of a given economy.

b) a state law could be declared illegal if it contradicted the constitution.

explanation:

the conflict of this case originated when james w. mcculloch, a cashier of the baltimore branch of the second bank of the united states that the congress had chartered in 1816, refused to pay a tax imposed by the maryland state.

in the case, the state of maryland appealed that the establishment of a second bank was unconstitutional since the constitution didn't say anything about granting that power to congress. however, the case determined that even if such right wasn't specifically stated in the constitution, it was part of the "implied powers" of the government enunciated in article i, section 8.

the case also eliminated maryland's legislation to impose taxes to a national bank, asserting that even though the states retained the power of taxation, the constitution's laws are supreme and can not be controlled by the states, therefore, if a state law contradicts the constitution, it should be declared illegal.

explanation: