50 ! 1. this led to the first "frost fair" in 1607, with a tent city set up on the river with lots of odd like ice bowling (amuse) 2. the building of a new london bridge in 1825 may have helped stop it from : (freeze) the new bridge had fewer pillars that the old one, allowing the river to flow more easily, and stopping it from flowing (slow) enough to freeze in cold winters. in 1858, (pollute) in the river because so bad that the house of commons at westminster had to guit sitting because of the unbearable smell the thames gave of.