His grandfather was an officer in the Japanese Army.

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.

My friend came from American Samoa.

He is studying the history of African Americans.

The history of the Empire of Japan is very interesting.

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

My dream is to go to the U.S. Virgin Islands.