Speed limit reduced to 35 mph, rationing of goods, and victory gardens
Before the panama canal people from East coast of America who wanted to go to Asia had to either sail around south America which took months or sail towards Asia and go around Africa which took even longer. The panama canal was a short cut right in the middle of central America which cut navigation time in half. Hope I helped. :)
I don't know where it is but it is important because it has a lot of water and most people needs it
I think the answer to this is C