When the United States purchased me. I almost doubled the country's size. What am I?

The Louisiana Territory

Explanation:

When the Thomas Jefferson purchased the Louisiana territory in 1803, it nearly doubled the the country's size.

I think it's Louisiana that was bought and almost doubled the size. Because in 1803, the United States nearly doubled in size when it bought the Louisiana Territory in a deal that shaped history.

Hope this helps :)

after the roman empire fell, some of its cultural achievements lasted for some time and others were lost. lost achievements include architecture , coins, and literacy. however, several things remained, such as the language. people may not have spoken this language in every city, but it influenced the languages they did speak. they also created the julian , which was commonly used until the eighteenth century.