Grouping Geographic Names: Continents, Countries, States, and Regions

The list Europe, France, Canada, Wyoming, North America, Arkansas, Asia, Africa, Oklahoma mixes categories. Here's a logical grouping:

By Geographic Hierarchy

Continents

• North America (contains Canada, USA, Mexico...)
• Europe
• Asia
• Africa

Countries

• France (in Europe)
• Canada (in North America)

U.S. States

• Wyoming
• Arkansas
• Oklahoma

By Hemisphere / Region

• Northern Hemisphere (all of the above): Europe, France, Canada, Wyoming, North America, Arkansas, Asia (mostly), Africa (mostly), Oklahoma.
• Western Hemisphere: Canada, Wyoming, North America, Arkansas, Oklahoma.
• Eastern Hemisphere: Europe, France, Asia, Africa.

By Political Status

• Sovereign states: France, Canada
• Subnational entities: Wyoming, Arkansas, Oklahoma (US states)
• Continents/Regions: Europe, North America, Asia, Africa

The original answer grouped "Europe, France, Canada" as Northern Hemisphere (true but incomplete), "Wyoming, North America, Arkansas" as US (incorrect – North America is a continent), and "Asia, Africa" as continents. The hierarchy above is more precise.