A. Cotton gin
The South was based on agriculture, which means lots of cotton was produced. The cotton gin is a machine which made this much easier.
The correct answer is sequences of comparable events.
<em>The kind of patterns that historians look as they track differences in societies are sequences of comparable events.
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When doing research on differences in societies, historians have to look for patterns in the societies they are studying to try to find sequences of comparable events. They need to compare similar variables in the societies they are comparing in order to have an accurate and valid comparison on circumstances, dates, and events.
The other options of the question were, b) sequences of events that have nothing to do with each other, c) sequence of colors, and d) the order in which events occurred.
Answer:
they were lined up in neat rows which made the bombs just spread between each ship exploding them all
