We Can’t answer this without a key. Every detailed map should have a key or legend. They are usually located on the corners of the screen.
The 1956 Suez Crisis began when "<span>C. Egypt seized control of the Suez Canal," since this led to the invasion of the region by Israel, and soon after Great Britain--in an attempt to regain control of the canal zone. </span>
38: Shortage
39: Price equilibrium
40: unsure, possibly Utility
41: Diminishing Utility
42: Demand
43: Expenses
44: Opportunity cost
45: Possibly Trade off
46: don't know
47: don't know.
The answer is most likely a, but if not, then d is correct