<span>Their progress and wealth is highly dependent on the harvests, and
the price of grain. They probably have to import some industrial
products and if they had a bad year (weather, other catastrophies, poor
technology) they can't get the necessary amount of industrial products
in exchange for their surplus e. g. in grain. </span>
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No tsunami warning system was in place. Due to the relative poverty of the region, there was no good way to warn the citizens. So C
La diferencia es que uno ayda (empresario) para aydar al que inventa (inventor) ejemplo: un inventor nesecita ganancias para su invento pero el no sabe como asi que le dice a sus empresarios si lo ayudan para que esas ganancias suban y asi el inventor hace su innovacion
Because the time span of Earth's past is so great, geologists use the geologic time scale to show Earth's history.
Hope this helped