Not quite, Eej; the long and winding road of British-U.S. diplomatic relations was also very bumpy until the 1871 Treaty of Washington, which (among other things) demilitarized the Canadian-U.S. border and settled the claims arising from the sinking of the CSS Albama.

At that time, "demilitarized" meant that Canadians and Americans could visit each other without benefit of passport. I guess the border is "re-militarized" now.