How did women contribute to the war effort in the north and south

What event brought the us into wwii? what conflicts happened after the us entered the war? i know the first part of this question, i need with the second part.

What form of government is powers of states? first letter of the answer is r.

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?