India thru the Ages Of Intellectual developments

During the bronze age, an urban revolution also took place, Sumer & Akkad were two great great urban civilizations of

this age. Towns became centers of a number of activities. for every construction an architectural plan had to be drawn
in advance. These outlines were laid out with aid of strings. In India, the ancient knowledge of architecture
was called Sulve Sutra.
The impressive temples thus constructed also needed to be administered. Records of receipts and expenditures had to be
kept. This spurred te invention of script writing around 2000 B.C. Geometry, Arithmetic, astronomy, medicine and theology
developed at an impressive pace. Solar calender was developed in the Nile valley.
 In India a script was developed  as far back as 3500 B.C. ( Mohenjodaro script 3500-2500 b.c.)

The Iron Age: Iron age commenced at around 1200 B.C. Iron was used in India around 1000 B.C. and excavations
 show that
iron weapons such as arrow heads, spear heads, spear heads were commonly used in Western Uttar Pradesh from
about 800 B.C.