Compare the two maps. which geographical feature formed the western boundary of the plains native american cultural region?

the appalachian mountains
the rocky mountains
the mississippi river
the pacific ocean

Where did the domestication of crops and animals begin?

What was the most common destination for african american migrants between 1910 and 1930

Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?