Events and Causes leading up to World War I.

Causes of WW1.
The period of time between the late 1800s and the early 1900s was one of great political change and instability. It marked the lead up to one of the greatest wars in history and was filled with challenges based on nationalism, imperial rivalry, colonial rivalry, and international alliances.
Possibly the earliest significant event in the wind-up to WWI was in 1839 where, through the Treaty of London, Belgium's neutrality was ensured by Britain, Austria, France, Prussia, Russia and the Netherlands. Before this, Belgium had been part of the Netherlands and after years of confl…