It would be first the Neolithic revolution that has happened during the prehistoric times. Next would be the Crusades when christian army tried to retake the Holy Land from the infidels and Muslims that they were fighting against. Lastly would be the Renaissance that means rebirth. Renaissance open the world into more possibilities and open the minds of the people.
Hm...
1) we would have to compete with them for food
2) we'd have to run like h if we saw a predator
3) we'd have much more different cities
4) some inventions might not have been invented
5) some modern species would be extinct, or not exist
The surprise attack at Inchon<span />
Technology has improved city life in more ways that can be summed up easily. The developments of running water, electricity, sewage systems, public transportation, and many others helped to make city life safer and healthier. In addition technological developments in building construction allowed for taller buildings to be built creating more space for businesses to develop and places for humans to live in cities. In recent decades environmental regulations and cleaner energy use has created healthier and more sustainable living conditions
It was where many Asian immigrants opposed reform efforts
