They would keep record by writing in the torah <span />
I am not completely sure, there may be different answers to this question:
Canadian Shield is not suitable for farmland, because it is very rocky.
Great Plains haven't been suitable in the past, because the land is very dry.
Greenland is covered in ice, although there are many places where farming is very successful.
Yucatan Peninsula is more or less a swamp today, but farming is possible.
Its area is 27 units squared and its perimeter is 24 units.
Not at all. Aftershocks are much weaker and have less energy than initial earthquakes due to the energy having been spent on the earthquake itself. However aftershocks are unpredictable and don't always happen, so they could possibly do more damage, but they do not have greater impacts than initial earthquakes.
My opinion.