Here's why:
* English: The most spoken language in the Western Hemisphere is English, spoken by a vast majority of people in North America, and significant populations in the Caribbean and South America.
* Spanish: Spanish is the second most spoken language, with a strong presence in Latin America and parts of the Caribbean.
* French: French is spoken in Canada (Quebec), parts of the Caribbean, and some South American countries.
* Portuguese: Portuguese is the official language of Brazil, the largest country in South America.
All of these languages are part of the Indo-European language family.
While other language families exist in the Western Hemisphere (like Native American languages), the Indo-European family dominates in terms of the number of speakers and geographic spread.