Answer:
difference
Explanation:
Calling for a "well greased/oiled bowl" is incorrect to me. Using a small amount of oil as lubrication is a good idea, as it stops the dough sticking to the bowl, and it conditions the dough as well. Adding flour is something many of us try to avoid at this stage, as it just dries up the dough. Jeff's call to keep the dough covered is important to this end too.
It was never seriously considered. It was not used because it would have been to hard, as there was many failed attempts at it before.
So that the Panama Canal could be built. This would make it easier for the United States to move their ships from the Atlantic to the Pacific and vice versa.