Landlocked Hyderbad would have been useless and would have to depend on india for everyting.Overflights, goods, trade everything.They would have to ask India for everyhting.Situation was totally impractical so we decided to make it more practical.
And vice versa my friend. Hyderabad wa a huge territory in the heart of central India, it seperated Madras (Tamil Nadu), from Madhya Pradesh and Maharashtra, and Kerrala, Karnataka from Orrisa.
India would have to depand a lot on passages thru Hyderabad to link the South with the rest of the country.
There are international treaties and laws to protect landlocked countries from being cutoff from the rest of the world.
Hyderabad (Andhra Pradesh) would have gained those rights protected by the UN.