How is this formally defined?

Well, it’s not formally defined, really.

A continent is a “large landmass” on Earth, but opinions on the specifics vary. In the United States, we’re taught that there are seven continents, but not everyone agrees. In different places and different time periods, the count has changed.

So, what defines a “continent” depends on who you’re talking to: a historian, a geologist, a cartographer, a politician, etc.

Why I Looked It Up

I was researching subcontinent and realized I need to figure this out.

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