Answer:
Capitalism is an economic system characterised by:
Lack of government intervention
Means of production owned by private firms.
Goods and services distributed according to price mechanism (as opposed to government price controls)
pros-cons-capitalism
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria Hungary.
Made their own trade and political decisions.