True or (False: give a one word why)

The steppe is similar to the FORESTS in North America.
The Mongols were OUTNUMBERED in most of their battles.
The Mongols often conqueured a town, KILLED everyone in it, and then burned it down.
As nomadic people, Mongols moved as the NEIGHBORS changed.
The steppe is similar to the ANDES in South America.
The enormous SIZE of the Mongol empire made it difficult to maintain and administer.
Please answer these questions as I really need them.