The Roman Church served to unify the west
<span>there was the humanist movement, or the renaissance; the rediscovery and interpretation of classical texts... there was also the protestant reformation (st bartholomews day massacre, battles between the catholics and hugenots)...the discovery of the New World (Exploration and Encounters with columbus and da gama) ... the enlightenment (focusing on the works of Rousseau and Voltaire)...and the french revolution (which i dont know much about...)</span>
William Penn designed the City of Brotherly Love
The Pax Mongolica brought a period of stability among the people who lived in the conquered territory. The resulting stability brought by Mongol rule opened these ancient trade routes to a largely undisturbed exchange of goods between peoples from Europe to East Asia.