The correct answer is C. Even a period of only a few decades can greatly change the historical context surrounding an event.
It showed how fast the public opinion can change. Originally Panamanians were supportive of the canal and the policies regarding it in relations to the United States, but very soon they started disagreeing with them and wanting the United States to give the canal ownership and control back to Panama who wanted to remove itself from relations with the US.
People make choices about how to use insufficient resources. Insufficient means that there aren't enough. We need to make proper choices about using resources properly. There aren't that many left....
