1 What is the principal type of interregional migration today? Why? 2. What states are most immigrants to the US migrating to?

3. What is the most prominent, historical large-scale internal migration in American history?

4 What was the first intervening obstacle which hindered American settlement of the interior of the continent? (think physical characteristics).

The great scientist alfred wegener proposed that continents have moved, while other scientists such as t.c.chamberlin argued against wegener. wegener's ideas eventually won, and are now widely accepted, because: a) wegener's ideas were more beautiful, and so were favored by the intellectual elite.b) wegener's ideas did a better job of predicting the results of new observations and experiments.c) wegener's ideas appealed to dead white european males, whereas chamberlin's didn't.d) wegener's ideas appalled dead white european males, and we all know that in this politically correct era,dead white european males cannot get a fair shake.e) wegener won the nobel prize.