Four states in the United States have straight line borders: Colorado, Wyoming, Utah, and New Mexico. These straight line borders were established through surveying techniques rather than natural geographical features.
The four states that meet at the Four Corners are Arizona, Colorado, New Mexico, and Utah. It is the only point in the United States where the boundaries of four states intersect at a single point.
The states of Iowa, Missouri, and Arkansas have their eastern borders on the Mississippi River. The Mississippi River borders seven other states.
Colorado is located in the Western United States. Colorado borders Wyoming to the North, Kansas and Nebraska to the East, Oklahoma and New Mexico to the South, and Utah to the East. Colorado is one of the states of the "4 corners," where New Mexico, Arizona, Utah and Colorado meet, forming the only place in the United States where for States meet.
Colorado
The other 3 states besides Colorado are New Mexico, Arizona, and Utah
The borders of New Mexico, Colorado, Utah and Arizona all meet in one spot at what is called "the four courners" since the state borders make four 90° angles like the corners of a square. New Mexico is therefore one of the four-corner states
New Mexico mainly and a tiny bit of Oklahoma. There is also a 4-way border with Arizona to the southwest (at the 4 corners of Utah, Colorado, Arizona, and New Mexico).
the st.Lawrence river, the Colorado river,the Mississippi river and the fraser river
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Michigan borders four of the Great LakesMichigabMichigan borders 4 great lakes
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