11. The Eastern Front was in Russia (tannernburg) or (Ukraine) 12. The Western Front was located in Belgium and France (swiss broder) 13. The technology developed during ww1 was machine guns 14. Italy belonged to the Triple Alliance before ww1 15. The industrial rev. brought new technology which gave way to superior weaponry. 16. The schlieffen plan was the German plan for war against Russia & France. 17. The U.S. entered the war because Germans had declared unlimited German submarine warfare and the Zimmermann note.