Question

Once the powder keg was ignited, what made it difficult to stop the chain of events that led to all-out war in Europe in 1914?

Answer 1

Nations responded to threats to their allies by mobilizing their militaries.

By the time that anyone took back the decision to go to war, it was already too late because militaries got ready so quickly. It was like lighting a fuse, it happens so fast, it is almost impossible to stop.