Marco polo traveled to Asia as gold, god, and glory are reasons for? a westward expansions era civil war era American revolution era exploration

Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment is called?

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?

Why didn’t the portuguese have access to the territory that is present-day latin and north america