Question 4: This was expanded in the
mid-1950s with the building of the ________ at roughly the 55°
north parallel and finally in the late-1950s and into the early
1960s the DEW Line was built across the Arctic
regions of North
America.
Question 9: In August 1949 Canada joined ________, and as part of its military commitment,
established an Air Division (No. 1 Air
Division) in Europe consisting of four wings.