I’m supposed to feel about Meghan Markle, Duchess of Sussex and veteran of some USA Network original series about lawyers or something. “She’s a liar! She’s a diva! She’s a gold-digger! She’s just using those poor, poor royals as a stepping stone! She should be grateful for what she has, instead of whining about how racist her in-laws are!” All of that is true. And here’s something else that’s true: Meghan Markle has done more to disrupt the British monarchy than George Washington ever could’ve dreamed. If you’re not a student of history, here’s a quick recap: America used to...