I'm working on the exact same project...
I know this isn't too helpful, but I think each 'seven' mentioned is possibly a time...
seven 'sevens' = 7 weeks
sixty-two 'sevens' = 62 weeks, over a year
Again I'm sorry this isn't too helpful...
I think the answer is B. Somoza.
C. Expansionary fiscal policy (don’t know if I’m right)
Usually, it's to search for resources (such as crops, gold, land, etc) and to conquer land for themselves.
The letter that makes the Louisiana purchase is A