What's the Kennection? #356

What’s the name of the London family whose children are tended by Mary Poppins?

The Augustiner Keller is one of the oldest and largest of Munich’s more than 180 of what open-air establishments?

What object names America’s 1899 policy for trade with China, as well as a modern corporate policy of managers being more available to their employees?

What organization was born in 1920 when representatives from four teams met at a car dealership in Canton, Ohio?

Operation Linebacker II, a series of B-52 bombing raids, was the last U.S. campaign of what conflict?

What's the "Kennection"?