plzz stop speaking abt hyderabad i am frm hyderabad , i was born and brought up here so i knw more abt hyd than u do.. this was a hindu majority state and the people were against the nawab of hyd... it was only the muslims of old city who wanted to join pak , bt thats a small number... even then hw did u xpect hyd state to be a part of pakistan where , all its borders are landllocked by india ... apply a little logic....
sikkim joined india through a plebisite ....
goa , was liberated from the portugese rule , its not that india annexed an independent country , the people of goa were always in favour of india... and mot importantly they are indians, under foriegn rule .. so, that becomes our responsibility to liberate them...
kashmir is a completely different topic.....