Alluvial fan could be the answer. Alluvial fans are cone shaped deposits of sedimentary particles. The particles can be sand. silt, gravel or clay. These land-forms are formed at the mouth of canyons or in valleys where ephemeral streams can occasionally transport material to the mouth of the canyons. An ephemeral stream is one that is created after a shower of rain or other form of precipitation; they are not permanent streams. <span />
Erosion, deposition, and weathering
Hi
The answer is : Mexicans Cession
If this is a true or false question, the answer is false. United States do share land borders with Mexico as well as Canada along with Russia, Bahamas and Cuba. United States then is north of Canada and south of Mexico. Hope this is the answer.
14m is the area of the rhombus