Has there ever been a unification of equivalent/competing state-like entities without violence or the implied threat of violence?

by masklinn

FRG/GDR and similar situation notwithstanding, as the original separation was forced upon the original unified nation-state.

mormengil

The Union of the Crowns of Scotland and England in 1603, and the Act of Union between Scotland and England in 1707 were both accomplished without violence or the implied threat of violence.

The details of the Act of Union were negotiated by a commission of 31 representatives from each side, and then voted on by both Parliaments.

The Act of Union occurred peacefully and with no threats of violence.