Identify an invention of early humans and explain how it has impacted the modern world.

One you could technically use is the creation of fire. Because of it's creation early civilization not only had a source of light but a source of heat to help them not freeze to death

There are many accounts of the invention of the compass. Some scientists attribute it to the Chinese or even the Italians. But most scientists agree that the compass was made by Iranians. The Iranian compass, unlike the Chinese compass, which had 24 directions, had 32 directions. The number 32, in addition to showing the accuracy of the Iranian compass, indicates the familiarity of Iranians with numbers in base 2 and their advanced mathematical knowledge. According to ancient Persian legends, Esfandiar Rouin used an iron arrow when moving to fight the dragon, which always showed him a fixed direction. In the first Islamic period, the qibla was added to the pole by the Iranians so that the right direction of the qibla could always be found in any situation. The Iranians made full use of this invention and introduced it to other Muslims. The Persian letters of the compass components in the Arabic language are an indisputable historical evidence that the use of the compass has reached other Muslim nations through the Iranians.

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:

the answer is title i subtitle b