Modern-day Arunachal Pradesh is one of the linguistically richest and most diverse regions in all of Asia, being home to at least 30 and possibly as many as 50 distinct languages in addition to innumerable dialects and subdialects thereof. Boundaries between languages very often correlate with tribal divisions—for example, the Apatani and Nyishi are tribally and linguistically distinct—but shifts in tribal identity and alignment over time have also ensured that a certain amount of complication enters into the picture—for example, the Galo language is and has seemingly always been linguistically distinct from Adi, whereas the earlier tribal alignment of Galo with Adi (i.e., "Adi Gallong") has only recently been essentially dissolved.