imperialism
militarism
alliances
nationalism
100

imperialism  

is the state policy practice or advocacy of extending power and dominion especially by direct territorial acquisition or by  gaining political and economic control of other territories  and peoples. 

100

militarism 

is the belief of the desire of a government or a people that a state should maintain a strong military capability and to use it aggressively to expand national  interests and or values

100

alliances 

the triple alliances which included Germany  Austria Hungary and Italy and the triple entente which included england France and Russia.

100

nationalism 

many nations believed that they were entitled to self rule and sought to entitled their power and influence.

M
e
n
u