How did environmental and economic factors contribute to patterns of migration between 1750 and 1900?

possible the invasion of room could have been avodiable but the people of rome were to stubboron and to wealthy the kingdoms saw them as a threat if they dialred it downa   bit ten i dont think they wouldnt failed   china was not iacvvdoaible they caused war to much and were out of hand therefor that must have happened india i dont really know it could of

yes i am pretty sure hope this

sep 30, 2009 - what is the best description of trade among northwest indians prior to the best answer: 1, indians traded among numerous groups for goods that came from indian government was strong and centered authority in an elected chief. a shaman as the white man called him was a healer and nothing else.