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History of Guam

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Through Colonialism, Megalith and Rice

Guam prior to European contact

Migrations

The Mariana Islands were the first islands settled by humans in Remote Oceania. Incidentally it is also the first and the longest of the ocean-crossing voyages of the Austronesian peoples into Remote Oceania, 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.

Archeological studies of human activity on the islands has revealed potteries with red-slipped, circle-stamped and punctate-stamped designs found in the Mariana Islands dating between 1500 and 1400 BC. These artifacts show similar aesthetics to pottery found in Northern and Central Philippines, the Nagsabaran (Cagayan Valley) pottery, which flourished during the period between 2000 and 1300 BC.

Comparative and historical linguistics also indicate that the Chamoru language is most closely related to the Indonesian Malayan subfamily of the Austronesian languages, instead of the Oceanic subfamily of the languages of the rest of Remote Oceania.

Mitchondrial DNA and whole genome sequencing of the Chamoru people strongly support Philippine ancestry. Genetic analysis of pre-Latte period skeletons in Guam also show that they do not have Melanesian ancestry which rules out origins from the Bismarck Archipelago, New Guinea, or eastern Indonesia. The Lapita culture itself (the ancestral branch of the Polynesian migrations) is younger than the first settlement of the Marianas (the earliest Lapita artifacts are dated to around 1350 to 1300 BCE), indicating that they originated from separate migration voyages.

Nevertheless, DNA analysis also shows a close genetic relationship between ancient settlers of the Marianas and early Lapita settlers in the Bismarck Archipelago. This may indicate that both the Lapita culture and the Marianas were settled by direct migrations from the Philippines, or that early settlers from the Marianas voyaged further southwards into the Bismarcks and reconnected with the Lapita people.

The Marianas also later established contact and received migrations from the Caroline Islands at around the first millennium CE. This brought new pottery styles, language, genes, and the hybrid Polynesian breadfruit.

The period 900 to 1700 CE of the Marianas, immediately before and during the Spanish colonization, is known as the Latte period. It is characterized by rapid cultural change, most notably by the massive megalithic latte stones (also spelled latde or latti). These were composed of the haligi pillars capped with another stone called tasa (which prevented rodents from climbing the posts). These served as supports for the rest of the structure which was made of wood. Remains of structures made with similar wooden posts have also been found. Human graves have also been found in front of latte structures. The Latte period was also characterized by the introduction of rice agriculture, which is unique in the pre-contact Pacific Islands.

The reasons for these changes are still unclear, but it is believed that it may have resulted from a third wave of migrants from maritime Southeast Asia. Comparisons with other architectural traditions makes it likely that this third migration wave were again from the Philippines, or from eastern Indonesia (either Sulawesi or Sumba), all of which have a tradition of raised buildings with capstones. Interestingly, the word haligi ("pillar") is also used in various languages throughout the Philippines; while the Chamoru word guma ("house") closely resembles the Sumba word uma.

Ancient Chamoru society

Most of what is known about Pre-Contact ("Ancient") Chamorus comes from legends and myths, archaeological evidence, Jesuit missionary accounts, and observations from visiting scientists like Otto von Kotzebue and Louis de Freycinet.

When Europeans first arrived on Guam, Chamoru society roughly fell into three classes: matao (upper class), achaot (middle class), and mana'chang (lower class). The matao lived in the coastal villages, which meant they had the best access to fishing grounds while the mana'chang lived in the interior of the island. Matao and mana'chang rarely communicated with each other, and matao often used achaot as a go-between.

There were also "makhanas" (shamans) and "suruhanus" (herb doctors), skilled in healing and medicine. Belief in spirits of ancient Chamorros called Taotao Mona still persists as remnant of pre-European society. Early European explorers noted the sakman, the Chamoru fast sailing vessel used for trading with other islands of Micronesia.

Latte

The latte stones were not a recent development in Contact Chamoru society. The latte stone consists of a head and a base shaped out of limestone. Like the Easter Island Moai statues, there is plenty of speculation over how this was done by a society without machines or metal, but the generally accepted view is that the head and base were etched out of the ground by sharp adzes and picks (possibly with the use of fire), and carried to the assembly area by an elaborate system of ropes and logs. The latte stone was used as a part of the raised foundation for a magalahi (matao chief) house, although they may have also been used for canoe sheds.

Archaeologists using carbon-dating have broken Pre-Contact Guam (i.e. Chamoru) history into three periods: "Pre-Latte" (BC 2000? to AD 1) "Transitional Pre-Latte" (AD 1 to AD 1000), and "Latte" (AD 1000 to AD 1521). Archaeological evidence also suggests that Chamoru society was on the verge of another transition phase by 1521, as latte stones became bigger.

Assuming the stones were used for chiefly houses, it can be argued that Chamoru society was becoming more stratified, either from population growth or the arrival of new people. The theory remains tenuous, however, due to lack of evidence, but if proven correct, will further support the idea that Pre-Contact Chamorus lived in a vibrant and dynamic environment.

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