A lot depends on whoms side you are on and if you dislike the world's based order built by the British in the 19th century

To end the slave trade and then the American order of the mid to late 20th century and late 21st century

I don't see China being good for peace

The British leadership new the empire was going to end from the 18th century and it's why it gave home rule

To its colonies and planed the end of Empire

People like Edward Gibbon, Edmund Burke William Pitt the elder saw the end of Empire from the 18th century

It was world war one that accelerated the end of the British Empire by at least 20 years