who invented the system of latitudes and longitudes in 2nd century a.d
History of longitude Eratosthenes in the 3rd century BC first proposed a system of latitude and longitude for a map of the world. By the 2nd century BC Hipparchus was the first to use such a system to uniquely specify places on Earth. He also proposed a system of determining longitude by comparing the local time of a place with an absolute time. This is the first recognition that longitude can be determined by accurate knowledge of time. In the 11th century Al-Biruni believed the earth rotated on its axis and this forms our modern notion of how time and longitude are related.[1]
Agra Sh훮h Jah훮n later shifted the capital to Delhi during his reign, but his son Aurangzeb moved the capital back to Akbarab훮d, usurping his father and imprisoning him in the Fort there. Akbarab훮d remained the capital of India during the rule of Aurangzeb until he shifted it to Aurangabad in the Deccan in 1653.
Red Fort It was designated a UNESCO World Heritage Site in 2007 as part of the Red Fort Complex.[2][6]
Arch The ancient Romans learned the arch from the Etruscans, refined it and were the first builders to tap its full potential for above ground buildings: