Post-classical history (also called the Post-Antiquity era, Post-Ancient Era, or Pre-Modern Era) is a periodization commonly used by the school of "world history" instead of Middle Ages (Medieval), which is roughly synonymous. The period runs from about 500 to 1450 CE though there may be regional differences and debates. The era was globally characterized by the expansion of civilizations geographically, the development of three of the great world religions (Christianity, Islam, and Buddhism), and development of networks of trade between civilizations.
See Post-classical history at Wikipedia.
Engraving of Abū Sahl al-Qūhī's perfect compass to draw conic sections..
Qur'anic Manuscript by Ibn al-Bawwab, one of the great Islamic masters of calligraphy, dated from 1000.
Shows extent of Norse Exploration and raids during Viking Age across Europe, North Africa, Asia and the Americas.