http://en.wikipedia.org/wiki/Causes_of_World_War_I
http://images.google.com/images?hl=en&source=hp&biw=1276&bih=785&q=austria-hungary+flag&gbv=2&aq=1&aqi=g10&aql=f&oq=austria-hungary
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=serbian+flag&aq=1s&aqi=g1g-s2g1g-s1g-ms1&aql=f&oq=sebia
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=imperialism&aq=f&aqi=g10&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=declaration+of+war&aq=f&aqi=g10&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=archduke+franz+ferdinand+and+his+wife&aq=f&aqi=g2g-m2&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=galviro+princip&aq=f&aqi=&aql=&oq=
http://images.google.com/images?hl=en&source=hp&biw=1276&bih=785&q=austria-hungary+flag&gbv=2&aq=1&aqi=g10&aql=f&oq=austria-hungary
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=serbian+flag&aq=1s&aqi=g1g-s2g1g-s1g-ms1&aql=f&oq=sebia
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=imperialism&aq=f&aqi=g10&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=declaration+of+war&aq=f&aqi=g10&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=archduke+franz+ferdinand+and+his+wife&aq=f&aqi=g2g-m2&aql=f&oq=
http://images.google.com/images?hl=en&biw=1276&bih=785&gbv=2&tbm=isch&sa=1&q=galviro+princip&aq=f&aqi=&aql=&oq=