That was the day when Lord Ganga introduced Devavratha, her son to his father king Shantana . The king was so happy to see his son as a great person in the world ...
And when he reached Satyavathi to share his happiness that Hasthinapura would become a great kingdom under his son's ruling ,he came across a big problem which made him sad and he lost his peace of mind.
To be happy and healthy ,with peace mind he need to give away
the throne of the great Hasthinapura to Satyavathi 's children which is totally out of the box what he had dreamt about but human feelings,emotions and their wishes makes them to take wrong steps which leads to a great destructions like the great KURUKSHETRA .However Mahabharatha which is a great moral to present generations would not have been happened if he would have not married Satyavathi. So Finally its the emotions and relations which make the world move ..
It happens so let it happen .
Thankyou