Probably rivers and water sources, because you need water to farm, and the water by rivers is rich and the soil is good. So yea the rivers and other water sources would be the main thing.
There was no such thing as the keto diet in the 1950s—meat and potatoes reigned supreme. You'd find hearty main dishes like Salisbury steak, beef stroganoff and meat loaf on a '50s dinner menu, plus scrumptious sides. Casseroles were also popular, particularly those featuring seafood or ham.
Both of the calendars are longer than what the year is suppose to be
hope this helps