geography: Which Roman Palace is one mile west of Chichester?

Questions

Niagara Falls stops flowing -- for 1 day -- because of an ice jam.?

Coca-Cola is created (it had cocaine at the time).?

First Lt. William L. Calley, Jr. found guilty in the MyLai massacre.?

Last US troops leave Vietnam, 9 yrs after the Tonkin Resolution.?

Mariner 10, Mercury flyby.?