Hurry how did the construction of canals and railroads affect the national economy during the 19th century?
these new forms of transportation boosted the economy by reducing the cost of moving goods across the country due to lower shipping costs.

canals and railroads introduced a temporary setback to the economy during that time due to the high costs of constructing these new forms of transportation.

the introduction of canals and railroads initially upset the national economy but quickly reversed the problem by increasing the amount of trade between countries

. after the construction of the eerie canal in 1825, it took several years for the economy to stabilize because many people did not agree with the idea, and they did not take advantage of it.

The answer is A. These new forms of transportation boosted the economy by reducing the cost of moving goods across the country due to lower shipping costs. :)

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: