Answer:
Not really anyone, but it started because someone from Germany killed Archduke Franz Ferdinand of Austria.
he United States actively supported the Iraqi war effort by supplying the Iraqis with billions of dollars of credits, by providing U.S. military intelligence and advice to the Iraqis, and by closely monitoring third country arms sales to Iraq to make sure that Iraq had the military weaponry required.
Sepoy Rebellion
Formation of the Indian National Congress
Formation of the British East India Company
Complete British colonization of India
The people or nations of the world, considered as being closely connected by modern telecommunications and as being economically, socially, and politically interdependent.