They generally greeted each other by saying "hello". This is the same way people greet each other now. However, they were much more formal to each other in the 1800s.
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The allowed for expanded shipping by water in an era before widespread railroads.
Germans
World of Warcraft
Economic
There have been a total of 111 Justices on the US Supreme Court since its inception in 1790; 99 have served since 1800.