South Eastern Idaho is the major growing area in Idaho
The eastern border of Western Australia is defined by 129 degrees E latitude.
The eastern border of the US was and is the Atlantic Ocean.
The Persian Gulf has no "south eastern border" -the south western border is Saudi Arabia and the Gulf states and Iran is the north eastern border.
Nebraska has a south-western border with Colorado and eastern border with Iowa.
The eastern border of West Virginia is primarily defined by the Potomac River and the eastern continental divide, but a section near the northern tip is not bordered by a river. This area is characterized by mountainous terrain, which creates a natural boundary rather than a riverine one. The geography of the region, including ridges and valleys, contributes to this unique border segment.
Arizona's eastern border is shared with the state of New Mexico.
The states of South Dakota and Nebraska both border Iowa. The eastern border of South Dalota is with Minnesota and Iowa. The eastern border of Nebraska is with Iowa and Missouri.
The Canadian province that forms part of the eastern border of New Hampshire is Quebec. This border is defined by the Connecticut River and extends northward, with Quebec lying to the east of New Hampshire. The region features a mix of natural landscapes and is characterized by its proximity to both the U.S. and Canadian borders.
Georgia's eastern border is the Atlantic Ocean
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Iran covers the complete eastern border of Iraq.