america — the American continent, including North, South, and Central America
columbia — a river in NW North America, rising in the Rocky Mountains and flowing through British Columbia, then west to the Pacific. Length: about 1930 km (1200 miles)
pronoun us
ourselves — Used as the object of a verb or preposition when this is the same as the subject of the clause and the subject is the speaker and one or more other people considered together.
we — (used to denote the narrator of a literary work written in the first person singular).
