What problems did the new boundaries in the Middle East calls as people found himself living in newly created countries

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

Which phrase describes the time it takes for a planet to make a complete rotation

What factors contribute to american farming success?