This strengthens the Out-of-India hypothesis for Indo-European languages. The hardest evidence we have is the paleoarcheology of the Sarasvati river.
The peak flow of the Sarasvati was 10,000 BCE - 3000 BCE. Tectonic shifts and climate change caused the river to dwindle from 2600 BCE - 1900 BCE. From ~1900 BCE on the river fully desiccated and no longer reached the Arabian Sea.
We see hundreds of urban sites along the dried path of the ancient Sarasvati. For example, Bhirrana in northern India which has its earliest radiocarbon-dated layers at 7500 BCE.
There is cultural continuity between the early IVC sites (7000 BCE) and later (3000 - 2000 BCE) sites.
Now connect this with the vast corpus of Sanskrit works, particularly archaic Rig Vedic Sanskrit. We know the Sarasvati was described as perennial and large river reaching the sea in those works.
Later Sanskrit texts like the Mahabharata, with language features implying hundreds or thousands of years of linguistic evolution, describe the river dwindling and eventually disappearing "underground".
This means Rig Vedic Sanskrit was being used in parallel with the extremely large and advanced urban society in the Indus Valley Civilization (IVC), which was larger than Egypt and Mesopotamia combined, at least in 3000 BCE.
The drying of the Sarasvati, which is known to have preceded vast migrations from the northwest Indian subcontinent to the northeast Gangetic plain, may have well forced climate-change migrants north into Central Asia, Mesopotamia and the steppes as well in the gradual lead-up to the Sarasvati's full collapse.
The current idea that Indo-European language entered India ~1500 BCE is completely incorrect, and oddly there's been no attempt to re-formulate the Indo-European language origins theory to match the data.
The peak flow of the Sarasvati was 10,000 BCE - 3000 BCE. Tectonic shifts and climate change caused the river to dwindle from 2600 BCE - 1900 BCE. From ~1900 BCE on the river fully desiccated and no longer reached the Arabian Sea.
We see hundreds of urban sites along the dried path of the ancient Sarasvati. For example, Bhirrana in northern India which has its earliest radiocarbon-dated layers at 7500 BCE.
There is cultural continuity between the early IVC sites (7000 BCE) and later (3000 - 2000 BCE) sites.
Now connect this with the vast corpus of Sanskrit works, particularly archaic Rig Vedic Sanskrit. We know the Sarasvati was described as perennial and large river reaching the sea in those works.
Later Sanskrit texts like the Mahabharata, with language features implying hundreds or thousands of years of linguistic evolution, describe the river dwindling and eventually disappearing "underground".
This means Rig Vedic Sanskrit was being used in parallel with the extremely large and advanced urban society in the Indus Valley Civilization (IVC), which was larger than Egypt and Mesopotamia combined, at least in 3000 BCE.
The drying of the Sarasvati, which is known to have preceded vast migrations from the northwest Indian subcontinent to the northeast Gangetic plain, may have well forced climate-change migrants north into Central Asia, Mesopotamia and the steppes as well in the gradual lead-up to the Sarasvati's full collapse.
The current idea that Indo-European language entered India ~1500 BCE is completely incorrect, and oddly there's been no attempt to re-formulate the Indo-European language origins theory to match the data.