[DOC] [TLE] Iowa Highway 9 - Wikipedia [PAR] Iowa Highway 9 is the most northern of Iowa's eastwest highways, traversing the 
entire northern tier of counties. It runs from the eastern terminus of South Dakota 
Highway 42 at the South Dakota border ... It heads south and east through Lyon 
County until it reaches Larchwood. There, it turns south for about a mile (1.5 km)
... [DOC] [TLE] Missouri River - Wikipedia [PAR] The Missouri River is the longest river in North America. Rising in the Rocky 
Mountains of .... It then proceeds to form the boundary of South Dakota and 
Nebraska, then ... Downstream, it begins to define the NebraskaMissouri border, 
then flows ... in the west to the Mississippi River Valley in the east and from the 
southern... [DOC] [TLE] NORTH DAKOTA'S BOUNDARIES - North Dakota State Government [PAR] Jul 20, 2007 ... Thus, both North and South Dakota were born within the same ... Rivers) and was 
not considered to be part of the United States (until ... The boundary between 
North and South Dakota follows an east-west line, the Seventh Standard Parallel. 
... Thus, the southern border of North Dakota is referenced to the... [DOC] [TLE] S. Dak., Alaska, Wyo. &, obviously, Hawaii are the only 4 states not ... [PAR] Jul 8, 2016 ... The capitals of both North and South Dakota are on this river # Quiz # ... From 
west to east, South Dakota's southern border is straight until it... [DOC] [TLE] Part of Sioux Falls almost was Minnesota - Argus Leader [PAR] Sep 2, 2014 ... Big Sioux River would have created the boundary under an 1850s proposal by 
Gopher State. ... the boundary would have followed a straight line to the southern 
end of ... Instead, South Dakota's border makes an odd jut eight miles east near ... 
heavyweights" to try to dominate the lands west of Minnesota. [DOC] [TLE] United Divide: A Linear Portrait of the USA/Canada Border [PAR] The border follows the straight line of the 49th Parallel across the western part of 
the ... This boundary is straight and flat, until it gets to the Rockies, where few 
man-made ... on Highway 313, between the western Minnesota and eastern 
Manitoba. ... Its 18 miles west to the next border crossing, the Roseau/South 
Junction... [DOC] [TLE] The Pleistocene Geology of Northwestern Iowa [PAR] Drainage Changes in the Little Sioux River Basin .. Course of ... Explanation of 
the Freshness of the Till ....... ... . The .... 395,. Tributaries of the Little Sioux from 
the East south to .Brooke Creek . .... correlation work was done in South Dakota 
to the west and in .... southern border of this Iowan are~ he placed farther south 
than. [DOC] [TLE] 27 U.S. States North of Canada -- Map - BarelyBad [PAR] Although always a part of Canada, Middle Island was until 2000 owned by an 
Ohio ... are at least partly north of some part of Canada, and I hereby declare as 
follows: .... The rest of the northern border, at the east side, drops altogether south 
to ..... Minnesota's southernmost point might or might not lie on a straight east-
west... [DOC] [TLE] America's best North-South roads - Lonely Planet [PAR] Apr 13, 2012 ... Read America's best North-South roads. ... As a bonus these roads pack a lot into 
routes that are often shorter than the east-west standbys. [DOC] [TLE] Iowa's Loess Hills - National Scenic Byway [PAR] (Follows the Missouri River) ... South Dakota ... Flanking Iowa's western border, 
the Loess Hills National Scenic Byway passes ... southern part of the Hills and 
the Omaha in the mid-section of the Hills. ... east and west or north and south, the 
roads in the Loess Hills wind ..... until it joins County Rd. E54, about 7.5 miles 
later. [DOC] [TLE] Page 1 FINAL REPORT State: South Dakota Grant Number: T-10-R ... [PAR] Missouri River in South Dakota; Project R-5; approved effective July 1, 2002) ... 
reintroduced during the pilot project died of West Nile Virus

Question: From west to east, South Dakota's southern border is straight until it follows this river
Answer: Missouri River