The American continent is where diverse cultures and nature coexist.

My dream is to live in the United States of America someday.

The whooping crane is an endangered species, and it is difficult to see its beautiful figure.

The American red wolf is one of the endangered species.

He is conducting research on historical kana usage.

Revisionism aims to change our understanding of past events.

My friend came from American Samoa.

He is studying the history of African Americans.

He said he couldn't agree with the views of the revisionists.

The National Aeronautics and Space Administration announced a new space exploration plan.