What did the marshall court rulings that supported the “sanctity of contracts” and federal law over state law boost

A. a national economy and a strong federal government

Explanation:

John Marshall was the chief of justice of the US Supreme court from 1801 to 1835. Through his decisions, he expanded the role of the Federal government and the basis for economic growth.

In McCulloch v. Maryland the Court decided that states could not tax federal institutions and expanded the Federal government by allowing it to pass laws that were not into the expressed powers of the federal government.

In Gibbons v. Odgen, the Court held that the power to regulate interstate commerce was granted to Congress by the Commerce Clause of the Constitution.

companies passed on production and transportation costs to consumers

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