alaska
The North American country that extends farthest East is Canada. The state of Maine in the United States is the most eastern state.
Alaska. On a map it's obvious that it's the farthest north and west, but a few of the Aleutian islands actually cross the Prime Meridian making it the most easterly as well.
Ohio River
Maine is the farthest east state.
The farthest north country is Denmark (via Greenland). The farthest east country is Kiribati.
Canada extends farthest east in North America, with Newfoundland and Labrador being the easternmost province.
Denmark is the farthest east North American nation via Greenland. However, just including points on the continent, then Canada is farthest east.
Atlanta is farthest north
The country in the region that lies farthest to the north in the middle east is Saudi Arabia. Saudi Arabia is the largest Arab state at approximately 870,000 square miles.
Alaska is N, E and W Hawaii is S
Maine