The decline of the Roman Empire in 476 CE brought to and classical antiquity. A new era was born in world history, which would see the rise of several cultural zones such as the Medieval West, the Mongol Empire, and the Byzantine Empire. The fall was characterized by failure of the empire to effectively or successfully exercise its rule over the vast majority. This also gave rise to the emergence of various successor polities.
Some of the reasons that contributed to this deadline included the decreasing numbers if the Roman population, deterioration of the army, and the weakening economy (Marks 16). The Byzantine Empire depended on the city of Constantinople to emerge, which proved to be a key and resourceful area. The Byzantine Empire took advantage of its strong military. Cultural, and economic powers in Europe to succeed. The Islamic Empire, on its part, benefitted from the common religious beliefs to bring people together. Religion played a key role insofar as unifying people and encouraging them to take a similar approach.
The origin of humanity is heavily contested, with several theories explaining potential origins. The evolution theory is one of the theories that is widely accepted. This theory traces human beings back to their initial forms when they underwent evolutionary stages such as Homo sapiens and Homo erectus. Populations to all regions was as a result of exploiting the available areas so as to promote agricultural activities.
In both the Eastern and the Western Hemisphere, agriculture played a role to change the lifestyles practiced in the regions. In both hemispheres, agricultural practices meant that people were to change from being pastoralists to become farmers, as they could produce enough. It is true to argue that the events that occurred in 1492 C.E altered the history of the world. This is the era that is credited with bringing civilization to the world.