Nope, you wrote in 207 in response to my question where did the common law come from, "The precedents, standards and customs practiced in the various states. No two states were identical in their common laws." Very plainly you meant the common law came from the states, which isn't true.
You lie.
Precedents, standards and customs evolved over time from multiple sources, they aren't "made up" by courts.
State courts followed the common law from England, prior to the separation, until they chose to change it, and follow their own precedents, emanating from statutes of the individual state Constitution, or their own judgement. State courts of couse follow the precedents set by federal courts when it comes to federal law. If they do not, well, some litigant should have removed the matter to federal court, and blew it.