Troll-I believe that the U.S., including Alaska, is larger than Canada, but I can't check right now; recall, however, that many of the early Canadians actually co-existed peacefully with the natives, which was much less frequently the case in the U.S. Siberia was not taken by force, nor was much of China, Tibet excluded; most of the People's Republic of China has been controlled by Chinese emperors for thousands of years, and it's hard to say whether conquest or assimilation was the original method of incorporation.