Dee ihe ndị ọzọ dị na paragraf a - Mgbe Agha Tacna gasịrị
, na nlọghachi nke ndị agha Northern Peruvian na Bolivian, yana ọdịda nke Peru-Bolivia Confederation, ndị agha Chile bidoro ọrụ, yana usoro nke Chileanization, na 1911, a na-etinye ya na mpaghara Chile nke Tacna dị ka Ngalaba nke Tarata, ebe Tarata ghọrọ obodo nke ngalaba homonymous. Otú ọ dị, na 1921, Chile kpochapụrụ ngalaba ahụ, na 1925 weghachitere obodo ahụ na Peru n'okpuru nkwekọrịta nke Onye isi ala US Calvin Coolidge, bụ onye mere ka ókèala ahụ kwekọrịtara na ugwu, nke na-agụnyeghị obodo ahụ.