Ring vs. Rang vs. Rung. You can tell when to use ring, rang, or rung by whether you need the present, past, or past participle (used with has or have) form. I always ring the bell after I knock. He rings twice before entering.
The rocky mountains passes through six states. The six US states  are: New Mexico, Utah, Colorado, Idaho, Montana, and Wyoming.
The Rocky Mountains are the major mountain range in western North America, running from the far north of British Columbia in Canada to New Mexico in the southwestern United States, climbing from the Great Plains at or below 1,800 feet (550 m) to peaks of over 14,000 feet (4,300 m).