Here are some possibilities and what they might cover:
* Geography:
* The Great Plains: This vast, grassy expanse stretches from Texas to Canada and is primarily characterized by flat, fertile land.
* The Rocky Mountains: This massive mountain range runs through the western parts of North America, from New Mexico to Canada.
* The Boreal Forest: Also known as the Taiga, this vast coniferous forest extends across northern North America, from Alaska to Newfoundland.
* The Pacific Coast: This region encompasses various ecosystems, from deserts to rainforests, along the western edge of the continent.
* Geology:
* Sedimentary rock: Much of the interior of North America is covered in sedimentary rock layers formed over millions of years.
* Glacial deposits: The last Ice Age left behind vast deposits of glacial till, sand, and gravel across the continent.
* History/Culture:
* Native American tribes: Numerous indigenous groups lived across the interior of North America, each with its unique cultures, languages, and traditions.
* Early settlers: The interior of North America was settled by Europeans over centuries, bringing their own cultures and transforming the landscape.
To give you a more accurate answer, please tell me:
* What time period are you interested in?
* What do you mean by "covered"? Are you asking about geography, geology, culture, or something else?
With more context, I can provide a better answer!
