Maryland. Maryland.
North Carolina makes up most of Virginia's southern border. Tennessee makes up the rest.
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.
Idaho's eastern border is defined by the rocky mountains.
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.
Botswana and South Africa are Namibia's eastern border.
Iran covers the complete eastern border of Iraq.
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Georgia's eastern border is the Atlantic Ocean
None. The Atlantic Ocean is on Uruguay's south-eastern border.