Which two expansion teams began play in 1976?

What was the Washington NFL team's name from 2020 to 2021, before becoming the Commanders? 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 Cleveland franchise returned to the NFL as an expansion team in 1999? 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"?