When the Windsors learned that Prince Harry had started dating then-Meghan Markle, they were so freaked out. It wasn’t just about Meghan’s Americanness and her race, it was that she was an actress/celebrity who understood promotion, social media and branding. They were all obsessed with The Tig and Meghan’s Instagram. They hated that she had millions of followers even before she started dating Harry too, which is why Meghan was heavily encourage…