Which state has as its official nickname "The Peace Garden State"?
North Dakota is the 39th state of the United States, having been admitted to the union on November 2, 1889. It is located in the Upper Midwestern region of the United States, bordered by the Canadian provinces of Saskatchewan and Manitoba to the north, the states of Minnesota to the east, South Dakota to the south, and Montana to the west. The state capital is Bismarck, and the largest city is Fargo.
The official nickname for North Dakota is "The Peace Garden State." The North Dakota Motor Vehicle Department placed the phrase on license plates in 1956 (the International Peace Garden straddles the boundary between North Dakota and the Canadian province of Manitoba). The nickname became so popular that it was formally adopted by the North Dakota legislature in 1957. The International Peace Garden was opened in 1932 in front of more than 50,000 spectators. It commemorates the lengthy period of peace between the two nations.
The picture is the International Peace Garden in North Dakota. It shows the symmetry of the gardens running down the international border between North Dakota and Canada (in the center); photo by Presley Perswain (wasme) on Flickr (noncommercial use permitted with attribution / share alike).
Other nicknames for the state are "The Roughrider State" and "The Flickertail State."