When Did Mexico Own US Territories? / One of 1st Kings of Mexico: HM King Ācamāpichtli (Classical Nahuatl: Ācamāpichtli [aːkamaːˈpit͡ʃt͡ɬi], meaning "Handful of reeds") was the first Tlatoani, or king, of the Aztecs(or Mexico)of Tenochtitlan, and founder of the Aztec imperial dynasty.Chronicles differ as to the dates of his reign: according to the Codex Chimalpahin,he reigned from 1367 to 1387; According to the Codex Aubin, he reigned from 1376 to 1395; and according to the Codex Chimalpopoca, he reigned from 1350 to 1403. Family and early life Acamapichtli was not a native of Tenochtitlan.Blood relationships between rulers were an important aspect of politics in 14th century Mexico,and as relative newcomers, the Mexicans were at a disadvantage.On the death of Tenoch,the elders of the Mexica calpultin decided to elect a tlatoani who could secure the fledgling city's position through ties to powerful groups in the region.They sent a delegation to the leaders of Culhuacan.Although the C...