Our teacher Lenny gave us a slideshare and our task was to improve it.
This is the link of the improved slideshare: http://es.slideshare.net/flor_araya/thecausesofww1-110426220516phpapp01-19923410?utm_source=ss&utm_medium=upload&utm_campaign=quick-view
Thanks Lenny!
I liked your presentation very much. The video you included is super interesting. Well done!!!!