But when you are at the top the only way is down and it's probably the benefit of hindsight

Thinking things could have been improved

Also world War 1 drained great Britons foreign currency and gold reserves and most likely accelerated the ending of the empire

But also with the growth of nationalism it meant British power and its days were numbered also it was British investment

In the industrialization of the European continent and North America which meant the world would become a multi-polar world

Same kind if thing happened to the USA losing its share of global power due to Nations recovering from world War 2