What is associated with: 1900 its slang for an informer?

Based on the clue '19 tours to alaska are offered by this cruise line...', what is the answer? Based on the clue '19 year old laura benanti played maria to richard ...', what is the answer? Based on the clue '19 years after his victory at manila bay this us a...', what is the answer? Based on the clue '19 years before commanding the aef in wwi he charg...', what is the answer? What is associated with: 1900 a naval officer tries to live down the cowardly act of abandoning a ship he thought was s… What is associated with: 1900 british troops invade orange free state during this conflict? What is associated with: 1900 dorothy lived in the midst of the great kansas prairies? What is associated with: 1900s coat or 1970s car?