Question: Cedar County was a policital subdivision of a nation that maintains a special relationship with who?

Context paragraphs:
North Cedar Community School District: The North Cedar School District is a public school district in Cedar County, Iowa.  Based in Stanwood, the district spans northern Cedar County, and serves the communities of Stanwood, Mechanicsville, Clarence and Lowden, and the surrounding rural areas.  A K-12 school district, North Cedar serves about 800 students.

Durant (Iowa) Community School District: The Durant School District is a public school district in Cedar County, Iowa.  Based in Durant, it spans areas of southeastern Cedar County, northeastern Muscatine County and western Scott County.

St. James, Nebraska: St. James, an unincorporated community in Cedar County, Nebraska, United States, was first settled in 1856 and served as the first county seat of Cedar County.  The former St. James (Old St. James) once covered ~67 acres 0.6 miles northwest of its current location.  Today’s St. James includes the St. James Marketplace (formerly Saints Philip and James Parochial School), a Catholic cemetery, a bar/restaurant, and several homes (one which was the former Catholic rectory).

Mill Creek Bridge (Clarence, Iowa): Mill Creek Bridge is a historic structure located in a rural area north of Clarence, Iowa, United States. The Cedar Bluff Bridge over the Cedar River was the first all-iron span built in Cedar County in 1877.  Four more iron spans were built later that year, as were several others over the years before this bridge was completed in 1889.  It is the only one of those bridges left, and one of the oldest pony truss bridges in the state of Iowa.  Citizens in Dayton Township petitioned the Cedar County Board of Supervisors in June 1888 for the bridge over Mill Creek.  The supervisors contracted with Ward and Keepers of Clinton, Iowa to design and build the bridge.  The 58 ft span was built on concrete-filled iron cylinder piers, with timber stringer approach spans.  Over the years sub-structural alterations have been made to the bridge.  It has subsequently been abandoned and its deck is in a deteriorating condition.  The bridge was listed on the National Register of Historic Places in 1998.

Cedar County Courthouse (Iowa): The Cedar County Courthouse is located in Tipton, Iowa.  Rochester was Cedar County's first county seat.  The log building built there as a courthouse and jail may never have been used for those purposes.  The county seat was moved to Tipton in 1841, but the frame courthouse building was not completed until 1845.  It was replaced in 1859 with a brick courthouse that was extensively renovated and enlarged in 1889.  The present courthouse was begun in 1965 and completed three years later for about $595,000.

Tipton, Iowa: Tipton is a city in Cedar County, Iowa, United States.  The population was 3,221 at the 2010 census.  It is the county seat of Cedar County.

Choctaw Nation of Oklahoma: The Choctaw Nation of Oklahoma (commonly referred to as the Choctaw Nation) is a federally recognized Native American tribe with a tribal jurisdictional area comprising twelve tribal districts.  The Choctaw Nation maintains a special relationship with both the United States and Oklahoma governments.

Hartington, Nebraska: Hartington is a city in Cedar County, Nebraska, United States.  The population was 1,554 at the 2010 census.  It is the county seat of Cedar County.

Cedar County, Choctaw Nation: Cedar County was a political subdivision of the Choctaw Nation in the Indian Territory.  The county formed part of the nation’s Apukshunnubbee District, or Second District, one of three administrative super-regions.

Stockton, Missouri: Stockton is a city in Cedar County, Missouri, United States.  The population was 1,819 at the 2010 census.  It is the county seat of Cedar County.

Supporting paragraphs: Cedar County, Choctaw Nation Choctaw Nation of Oklahoma
Answer: both the United States and Oklahoma