How was the John brown house Museum created

The John Brown House is the first mansion built in Providence, Rhode Island, located at 52 Power Street on College Hill where it borders the campus of Brown University. The house is named after the original owner, one of the early benefactors of the University, merchant, statesman, and slave trader John Brown. It was declared a National Historic Landmark in 1968.[2][3] John Quincy Adams considered it "the most magnificent and elegant private mansion that I have ever seen on this continent."[3]

Ineed it for the legislative branch test