Atlanta
Yes, "Southeastern" in "Southeastern US" should be capitalized as it is part of a proper noun.
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southeastern part of USA depends on agriculture and northwestern part on industry.
The largest island in the East Coast that is uninhabited is Cumberland Island located in the southeastern part of Georgia, with an area of 57.68 square miles.
Which European country built plantation colonies on what is now the southeastern part of the US
New York City is the largest city in the US.
Jacksonville, Florida
The second largest city in the US is Los Angeles.
Columbia is capital and largest city of US State South Carolina.
The largest US city in 1810 was New York City.
New York City is the largest city in US, and the second largest city in North America. Mexico City is the largest. Toronto Is the largest city in Canada, and the fifth largest city in North America, after Los Angeles and Chicago.