Henry ford's assembly-line method of production used some of the manufacturing ideas of

a. eli whitney
b. benjamin franklin
c. michael farady
d. isaac newton

A.Eli Whitney

Explanation:

Eli Whitney was an american inventor and fabricator that invented the Cotton Gin which was basically an engine that separated the cotton from the seed, it separates cotton fiber from its seed, that was a job that was slow and had to be done manually by people, Ford used this idea to revolutionize the industry and create easier and faster ways of production of his model T.

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:

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem