internationalisation

noun2

1. •
   The conversion of something in order to make it international.

   • Before the union of the Scottish Crown with that of England, it had for a brief period been united with that of France. On this occasion, a complete legal internationalization was effected. — 1860
2. •
   The act or process of making a product suitable for international markets, typically by making text messages easily translatable and ensuring support of non-Latin character sets, languages, and regions.