What did Britain do to prevent rebellion in its colonies during the 19th century?

It enacted reforms that gave most of its citizens the right to vote.

More importantly, some colonists didn’t think that they needed the British anymore and the population inhabiting these growing, resource-rich colonies was virtually self-selected for rebellion against authority, many of its settlers having emigrated from the British Isles to seek greater freedom.

labor leaders and organizations had the power to demand it.

explanation:

workers got a five-day workweek because the bcea protects and respect the rights of the employees. labor leaders and other groups demanded it.

yes i can of course like what is it gonna be about