<span>Teotihuacan was an ancient city in Mexico established around 400 B.C. by a still disputed Mexican civilization. By 750 AD the buildings and city had been abandoned by the inhabitants. This city was left abandoned and untouched until the 1400s when the Aztec Empire revealed its existence. The Aztecs named the city Teotihuacan and began using the buildings especially the temples for their empire. </span>
Well, there was steel plows, and dry farming, and seed drills, and reapers, and threshing machines, etc.
Hope that helps!
There were multiple countries but the one that banned it completely was China
World War I ended on the 11th Hour of the 11th Day of the 11th month of 1918 when the armistice took effect.
So, 11/11/1918 at 11:11 AM.