None. A border defines the boundary of a state therefore no state will cross the border of another state.
The US state of South Dakota is the southern border of North Dakota.
The US state of Montana has an eastern border with North Dakota and South Dakota.
North Dakota and South Dakota border Minnesota to the east.
The US state of Montana is bordered by North Dakota and South Dakota on its eastern border.
North Dakota's eastern border is shared with Minnesota and North Dakota's southern border is shared with South Dakota. So both Minnesota and South Dakota would be southeast of North Dakota.
Minnesota is the state which is east of both North Dakota and South Dakota. Minnesota shares its western border with North Dakota and South Dakota. Minnesota is bordered on the south by Iowa and on the east by Wisconsin and Michigan. Minnesota is bordered on the north by the Canadian provinces of Manitoba and Ontario.
North Dakota is a US State and contains no countries.
Montana border North Dakota to the west. South Dakota to the south. Minnesota to the east. The Canadian provinces of Manitoba and Saskatchewan border North Dakota on the north.
The US state of Montana is bordered by both North Dakota and South Dakota on its eastern border.
Interstate 29 (I-29) in the U.S. state of North Dakota is located in the eastern part of North Dakota and runs from the state's southern border with South Dakota near Hankinson to the Canadian border just north of Pembina.
The US state of North Dakota is bordered on the north by the Canadian provinces of Saskatchewan and Manitoba.
Both North Dakota and South Dakota share a border with Minnesota. South Dakota also shares an eastern border with Iowa.