What does "louisiana territory" mean?

A large stretch of land purchased from France by the USA, comprising a large portion of the modern-day United States.

What is a synonym for "louisiana territory"?

Common synonyms include: louisiana.

name

name ·Rare ·Advanced level

Proper Noun

1
A large stretch of land purchased from France by the USA, comprising a large portion of the modern-day United States.

From Louisiana + territory.