Posted by ayan on Thursday, September 5, 2013 at 2:05pm.
what environmental factors have influenced migration routes
history - Ms. Sue, Thursday, September 5, 2013 at 2:10pm
How does your book define environmental factors? Do they include mountains, oceans, and rivers?
history - Anonymous, Tuesday, September 13, 2016 at 6:55pm
Crops for food if your books have ocean rivers and (etc) involved.