Thousands of years of water security provided by Saraswati, Indus and Ganga river systems and world's most fertile planes cultivated around them naturally facilitated the extra-ordinary development of culture and civilization from around 8000 B. After thousands of years water supply from ice-caps started depleting, tectonic movements resulted in drying up of rivers like Saraswati, trade relations flourished and more adventurous people started moving towards Central Asia and Europe.
Thus there was neither any end of Vedic civilisation due to imaginary Aryan invasion theory nor were Dravidians 'aboriginal savages' of North India.
The rise and fall of Vedic Civilisation is thus attributable to ecological cycle post last ice age and not to any 'Aryan invasion'There are 53 references in Rigveda as prayers offered to Aswinis at dawn.
The description clearly points to the observation of the pair of stars in the Aries constellation (referred to as Aashvin or Asvini) just before sunrise as a ritual to mark the year beginning.
This is the sky just before the Battle of Kurukshetra, according to Bhatnagar, an astronomer who has spent the years since his retirement— as additional director general from the Positional Astronomy Centre of the Indian Meteorological Department—extracting astronomical references from the Mahabharata.
By tracing the winter solstice and the autumnal equinox indicated in the text, he has found a time bracket of 1,000 years.
Therefore some people started travelling from south to north.
As per ecologists this ecological cycle has been repeating itself and will get repeated after every ice age and during the beginnings of all Holocene cycles.
Therefore the history of growth of civilization in the world is not 4 to 5 thousand years old but it is more than 10,000 years old.
This blog is the result of 15 years of primary research by the writer on a hugely misrepresented topic 'Ancient Indian History', for which she devised a unique methodology of reading ancient Indian literature and verifying the results with modern sciences.
Top research organizations (like ISRO and ASI), scientists and Sanskrit scholars have contributed towards her work and the findings are expected to add new dimensions to the study of ancient history.