How have canada and the united states worked together?

What happened between 1804 and 1815

Round arches allowed the romans to create structures with

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons