In a representative democracy the power of government officials is primarily checked by

The native americans had what kind of economy?

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?

What industry was exempt from the child-labor laws passed in the factory act of 1833?