20N, 40N, and 60N are all what ?

acting on one of angular points of a regular hexagon to ward the other five angular points take in order.

Explanation:

cause i know

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

b) the confederacy had to pay all union war expenses.