The chain of events set in motion by a major occurrence is often called an aftermath.
The word “Math” is from an old English word meaning “to mow.”
The second, smaller crop of hay that sometimes springs up after a field has been mowed is called the aftermath, or “after mowing”.
Although this hay is next to useless, it is a problem that has to be dealt with for the good of the fields.
The secondary consequences of a greater event is called the “aftermath”.