The Atlantic Ocean.
The eastern border of Illinois is shared with Indiana.
The Atlantic
Yes, Illinois is located east of the continental divide. The continental divide runs along the crest of the Rocky Mountains, separating the watersheds that drain into the Pacific Ocean from those that drain into the Atlantic Ocean. Illinois is part of the watershed that drains into the Atlantic Ocean.
The Atlantic Ocean is closest to Illinois.
Illinois is bordered by Indiana to the east.
Indiana is east of Illinois. Indiana is located between Illinois and Ohio. To the east of Ohio is the state of Pennsylvania.
Illinois is bordered by Indiana to the east.
Illinois is bordered by Wisconsin Missouri to the west. Ohio is bordered by Pennsylvania to the east. Indiana is EAST of Illinois and WEST of Ohio.
Chicago, Illinois, is closer to the East Coast. It is situated on the southwestern shore of Lake Michigan and is approximately 1,000 miles from the Atlantic Ocean. In comparison, it is about 1,800 miles from the Pacific Coast. Thus, Chicago is geographically aligned more with the East Coast.
Illinois is bordered by Kentucky to the southeast, and Indiana to the east.
Illinois is bordered by Indiana to the east. Indianapolis is the capital city in Indiana.
If the Springfield you are talking about is in ohio, then it is east. If it is illinois, niether.