No side so much, politicians and leaders mainly.
There is no bad side or good side but Russia was on the Allies Side.
Germany was on the losing side of World War 1.
The side that lost world war 1 is central powers
japan
During World War I, the "bad country" was most often the country whose troops were on the opposite side of the battlefield from one's own side. Taking a step back, the victors of the war (the many nations belonging to the Triple Entente) placed most of the responsibility for the war on Imperial Germany, judging it to be the "bad country" whose actions were most significant for the war's eruption.
Britain's side
it was very bad
the condition the world war one were very bad and were horrible
World War 2 and an economic depression.
bad girl
The allies
Turkey joined Germany in World War 1