During this period typography, and Compass were invented.
The three powers are : The power to raise armies,to declare war, and write bills to be approved by the president. I find these three most important out of all because these affect our economy and country more then the rest (Not saying the rest aren't important just don't think there as important as the three i listed above)
D because it provides a good source for whales, seals, ice fish, and penguins. Those adaptations allow them to survive the winter months.
