Trust that the passage of time has rendered many old decisions quite obsolete.
I'm not trusting you for anything.
It isn't the passage of time that has rendered old decisions obsolete, it's subsequent court cases or Constitutional amendments that have rendered some cases so as your subsequent statements provide.
Is Minor vs. Happersett completely obsolete or only some portions of it?
...the relevance of that fact is that the US, after successfully revolting against the Brits during the unpleasantries from July 4, 1776 until the Treaty of Paris, adopted the Common Law of England...
No, America didn't adopt the Common Law of England. You're slip is showing.
America adopted the concept of common law, not English Common Law itself. Once our courts were established and cases were decided our own common law was made.
Minor vs. Hapgood did not survive the enactment of the Women's Suffrage Amendment...
I've never heard of Minor vs. Hapgood? Got link?
Your mistakes are critical in your misunderstanding.
It was the fault of Pope John Paul I and Pancho Villa.