Regarding iphone charger

I'm receiving an iPhone here in Nepal soon but the problem is I don't have a charger. And another problem is I'll be moving to the US soon. And the final problem is adapters/pins of Nepal do not support that of US. I don't want to spend money to buy an adapter here to be unable to use it over there. If you have any idea where I can get an original Apple charger that has US standard adapter/pin I'd be greatful. Type C btw.