WORLD HISTORY

Detailed explanation-1: -Most part of contributions made/ legacy by ancient civilizations – as writing system, ancient architecture, philosophy, mathematics, astronomy and medicine, and others – has already been pointed out by RG colleagues.

Detailed explanation-2: -Mesopotamia, 4000-3500 B.C. “Mesopotamia is the earliest urban literate civilization on the globe-and the Sumerians, who established the civilization, established the ground rules, ‘’ says Kenneth Harl, author, consultant and professor emeritus of history at Tulane University.

Detailed explanation-3: -The Great Pyramids of Giza Perhaps the most iconic ancient architectural achievement of all time, these three pyramids dominate the landscape of the Giza plateau.

Detailed explanation-4: -The Roman Empire was one of the greatest and most influential civilizations in world history. It began in the city of Rome in 753 BCE and lasted for well over 1000 years. During that time, Rome grew to rule much of Europe, Western Asia, and Northern Africa.