Which came first - Roller Skates or Rollerblades?

How was the Roller Skate invented? How has Roller Skating evolved over the years? How fast can you go on Roller Skates? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.