No team
There was not an NFL team there until the Colts moved from Baltimore.
The Baltimore Colts.
The Baltimore Ravens.
Yes.
The Baltimore Ravens are Baltimore's NFL team. The Baltimore Orioles are Baltimore's Major League Baseball team. They are both still there. Neither one became the other.
The Baltimore Ravens.
Baltimore Colts
The Baltimore Ravens
The Baltimore Ravens
Baltimore Ravens
The Baltimore Colts was the first NFL team in Baltimore. They were "in business" (for the lack of a better term) from 1953-1983.