The parliament of Great Britain passed the Tea Act, a piece of legislation that ultimately led to the Boston Tea Party.
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President Lyndon B signed the National Traffic and Motor Safety Act, which set new standards for vehicles and drivers.
The Treaty of New Echota was signed.
The US Supreme Court ruled it would be the final interpreter of all constitutional issues.
The Northwest Ordinance was enacted; it is considered one of the most important legislative acts that the Confederation Congress of the US passed.
The United States Congress passed the Meat Inspection Act and Pure Food and Drug Act.