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.
None. The Atlantic Ocean is on Uruguay's south-eastern border.
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.
The south west border of Germany is shared with Switzerland and the south eastern border is Austria.
US Interstate 90 passes through South Dakota from the eastern to western border. US Interstate 29 passes through South Dakota from the northern to southern border.
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.
Iraq's south eastern border is the Persian Gulf. It's capital is Baghdad.
atlantic ocean
Exactly 600 miles