Per Capita GDP matters where UP stands 32 at 65K, TN at 11 with 2.18L, KK at 7 with 2.20L, MAH at 15 with 2.02L.
1. UP centered at GZB/Noida/Greater Noida for Industries which lead mass Migration from East/Central UP
2. Vast & Fertile Agricultural Land with Multi River beds, UP is unbeatable to any State in Agricultural Output but is beaten out with Huge Population (3 Times of KK, 2.5 Times of TN & 1.8 Times of Mumbai)..& certainly Population has to move out & explore for living!!