1. Hindu recorded history is FAR longer than 2-3000 years.
2. Islam ad a dominant place for a relatively long time, but its effect was to regress society and civilization. So that like saying I had cancer for a long time so now the Lumps of cancer cells and Tumour are my adopted son.
3. No one really cares enough about islam to wipe it away. Its important and relevent only in your mind. To Hindus it is more of a nuisance than any real problem.
This is the map of of the history of India for the last 200 years.
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