Cases like nfib v. sebelius and shelby county v. holder illustrate what trend that has appeared in supreme court decisions since the 1990s regarding the relationship between states and the national government?

Explanation:

In NFIB v. Sebelius law suit, National Federation of Independent Business filed a suit against ACA claiming that it was unconstitutional because of  mandate which forced the citizens to purchase health insurance.

In Shelby County v. Holder case, Shelby County filed a case against the Congress that section 4(b) and section 5 are unconstitutional which is relevant to the issue of voting rights.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

they can increase to boost the enonomy.