How did the north’s superior railroad system give it an advantage during the civil war

Which native american tribe allied with the spanish?

Once the plague became airborne, how could it then be spread?

What was the major outcome of shays' rebellion? a) daniel shays and his followers were all hanged. b) farmers were given more rights by the states. c) george washington publicly supported the rebellion. d)it convinced many people that the articles of confederation was in need of revision.