Which Cleveland franchise returned to the NFL as an expansion team in 1999?

In what year did the Washington franchise adopt the name "Commanders"? Which expansion team began play in 2002, bringing the league to 32 teams? Which two expansion teams began play in 1995? Which two expansion teams began play in 1976? Which team is named after its founder and first coach, Paul Brown? Which team did Paul Brown found after leaving Cleveland? Which team was founded and coached for decades by George Halas, known as "Papa Bear"? Which NFL team's helmet famously has no logo on it?