Why is the constitution a supreme law of the land?

since the constitution is the supreme law of the land those laws.cannot be valid and must be overturned. The constitution of the United States is the supreme law of the land meaning that no law can be legal if it contradicts what the constitution says. Hope this helps.

Explanation:

on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.

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