Correct me if I'm wrong but technically India is 1st World
In a nut Shell, along with USA, Australia, NZ, Singapore, France, Poland, Holland, (even Russia at the time) etc........ie anyone who was aligned with the "Allied Forces" during WW2.
2nd world was anyone allied with the "Axis Forces" during WW2 ie, Japan, Italy, etc.
All the rest were classed as 3rd World.
History lesson over!
BR.