35. In ____, Alaska and Havaii became the 49th and 50th states.
36. In the Great Lakes, only _____ belongs to U.S. completely while the other four are shared with Ganada.
37. _______ is separated from the main land by Canada.
38. The Rockies, the backbone of the North American Continent, is also known as _____.
39. _____ is the largest continental state in area in the U.S.
40. The West can be divided into three parts: the Great Plains, the Rocky Mountains and _____.
41. The South is the headquarters of a large segment of the ______ and ________ industry.
42. New England is sometimes called the ______ of America.
43. _______ is considered to be one of the characteristics of the American people since one in five moves to a new home every year.
44. The first blacks were brought to north America as slaves in _____.