How long has the Chicago Bears been in existence?

the history of the Chicago Bears is that they where not always called the bears they were origanily called the Chicago staleys. the in the 1920 the nfl had begun and seventeen teams were chosen. the coach for the staley bears was Horge halas and he was going on and off. in the late 1920 Gorge halas came up with name the Chicago bears because they were playing at the cubs stadium and Gorge halas thought that football players were bigger than Baseball players.