I believe your answer is the Aztecs.
They were too large and expensive - typically a computer would fill a room and would have to have its own power supply.
E is the answer. It is a hurricane which causes Droughts (temperature spikes), and floods.
The supporters you're referring to were called patrons. Patrons were usually wealthy merchants or people who have made their fortune in other ways and wanted to either have a picture of themselves and their family, or generally had a desire to support painting, some even decided to order paintings for the church in order to get in good standing with the church officials.
C: Similar events and trends often take place in different places during the same periods
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Hopefully this help:)