Why were granger laws unconstitutional

Granger laws were declared as an unconstitutional because they tried to have control over the interstate commerce, which was the federal government's responsibility by Gibbons v. Ogden. Granger Laws were laws that were passed in multiple midwestern states in US. These states include Iowa, Minnesota, Illinois, and Wisconsin.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion

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