swift - Using Xcode for an iPad app, how do I recognize and highlight a country on an image of a continent (not in MapKit) -

i'm trying make ipad app can drag name tag of country onto blank map (image) , place . how make each country (shape within border) recognized , highlighted drag name tag around map. educational app , not plan use mapkit. using image of continent.

since i'm new xcode , swift, haven't yet seen way work extremely complex shapes, such unique borders of each country. i'm thinking spritekit might useful?

without using mapkit need draw every possible country spritekit , overlay them on image, use zoom , placement calculate coordinates determine 1 in. easier use third party library this.