joined together inside a boundary
contigous
huge urban area made up of several large cities and nearby communities
megalopolis
rolling inland grassland region with fertile soil
prairie
region of parallel mountain chains
cordillera
deep valleys with steep sides
canyon
referring to a body of water wide and deep enough for ships to use
navavigable
giant sheets of ice
glacier
the high point in a landmass that determines the direction rivers flow
divide