Both Uses

abolition
in
Outliers
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The "Centenary" was a reference to the fact that the scholarship was established one hundred years after the abolition of slavery in Jamaica.
Chpt Epil. *

abolition = ending a system or practice of
It was reserved for the graduates of public elementary schools, and, in a measure of how deeply the British felt about honoring the memory of abolition, there was a total of one Centenary scholarship awarded every year for the whole island, with the prize going to the top girl and the top boy in alternating years.†
Chpt Epil.

Definitions:

(1) (abolition)
the act of formally ending a system, practice, or institution -- most often used to refer to the movement to end slavery when no specific system is named
(2) (meaning too rare to warrant focus)