Many other female rappers have done so (Iggy, Lil Kim, Eve) yet Nicki has never managed this, not even as a feature. The Pinkprint shows us that the US is clearly Nicki's biggest market, so why has she never been able to get a US number 1?

Idk Selena stan.

Because getting a #1 is about timing it's not about the quality of the song or artist

Who cares, she has dozens of hits in the US.

.