Guam: History
=== Pre-Contact era ===
Guam, along with the other Mariana Islands, were the first islands settled by humans in Remote Oceania. It was also the first and the longest of the ocean-crossing voyages of the Austronesian peoples, and is separate from the later Polynesian settlement of the rest of Remote Oceania. They were first settled around 1500 to 1400 BC, by migrants departing from the Philippines which was followed by a second migration from the Caroline Islands in the first millennium AD. A third migration wave took place from Island Southeast Asia, likely the Philippines or eastern Indonesia, by 900 AD.
These original settlers of Guam and the Northern Mariana Islands evolved into the Chamorro people, historically known as Chamorros after first contact with the Spaniards. The ancient Chamorro society had four classes: chamorri (chiefs), matua (upper class), achaot (middle class), and mana'chang (lower class). The matua were located in the coastal villages, which meant they had the best access to fishing grounds. The mana'chang were located in the island's interior. Matua and mana'chang rarely communicated with each other. The matua often used achaot as intermediaries.
There were also "makåhna" or "kakahna", shamans with magical powers and "'suruhånu" or "suruhåna", healers who used different kinds of plants and natural materials to make medicine. Belief in spirits of ancient Chamorros called "Taotao mo'na" still persists as a remnant of pre-European culture. It is believed that "suruhånu" or "suruhåna" are the only ones who can safely harvest plants and other natural materials from their homes or "hålomtåno" without incurring the wrath of the "Taotao mo'na." Their society was organized along matrilineal clans.
The Chamorro people raised colonnades of megalithic capped pillars called latte stones upon which they built their homes. Latte stones are stone pillars that are found only in the Mariana Islands. They are a recent development in Pre-Contact Chamorro society. The latte-stone was used as a foundation on which thatched huts were built. Latte stones consist of a base shaped from limestone called the haligi and with a capstone, or tåsa, made either from a large brain coral or limestone, placed on top. A possible source for these stones, the Rota Latte Stone Quarry, was discovered in 1925 on Rota. …