The initial contact might not always have been peaceful, but the actual blend often is. Germany is not at war inside even though there is huge mixing between it

The initial contact might not always have been peaceful, but the actual blend often is. Germany is not at war inside even though there is huge mixing between its states and the states themselves are not all historically "cut", one was also created by people voting to merge. People actually wanted to blend the various smaller states into one back in the 19th century (so the other way around).