Diego de Almagro Campaign (1535–1537) The Spanish expansion into Chile was an offshoot of the conquest of Peru.
Diego de Almagro amassed a large expedition of about 500 Spaniards and thousands of
yanaconas and arrived at the
Copiapó Valley in 1535 and at
Aconcagua Valley in 1536. From there he sent
Gómez de Alvarado south in charge of a scouting troop. Alvarado reached the
Itata River where he engaged in the
Battle of Reynogüelén with local Mapuches. Alvarado then returned north and Diego de Almagro's expedition returned to Peru due the ferocity of the Mapuches, and they had not found the riches they expected. After a few months of settlement, Pedro de Valdivia gathers forces and goes directly to attack the fortress of
Michimalonco in Paidahuén, leading to the battle of Paidahuén where the Mapuches are completely defeated and Michimalonco is taken prisoner. To obtain its freedom, Michimalonco offers ownership of the
Marga Marga gold pans, previously exploited by the
Incas, but which since the expulsion of the Incas belonged to Michimalonco. With this, Michimalonco and his imprisoned men are released and Michimalonco allocates part of its vassals to the exploitation of the gold by the Spanish. After a time of exploitation of the gold, Trangolonco, Michimalonco's brother, revolted and defeat the Spaniards in Marga Marga and destroyed the Spanish settlement, then defeat the Spanish in
Concón and burned a ship under construction that was in the Bay, only a Spaniard and a slave escaped from the place. Trangolonco addresses as ambassador to all the loncos (Mapuche chiefs) of the
Cachapoal,
Maipo and
Mapocho valleys to send their contingents and join Michimalonco, so that, just as he did with the Incas, he expels the Spanish from
Araucanía. This action managed to gather around 16,000 warriors. defending the city of Santiago On September 11, 1541,
Michimalonco attacked the Spanish and carried out the
Destruction of Santiago, with only a handful of Spaniards barely surviving. Then Michimalonco applied the “empty war” which consisted of not giving the Spaniards any type of food or supplies so that they could go back to
Peru. The Spanish barely resisted and there were a series of skirmishes between Spanish and Mapuche forces. According to chronicler Francisco de Riberos northern Mapuche put cultivation on hold for more than five years. In 1544
Michimalonco headed to the
Limarí River valley to cut off land communications between Chile and Peru for the Spanish. Michimalonco becomes strong in this sector with its Mapuche contingent added to the contingent of its
Diaguita allies. Northern Mapuche groups appear to have responded to the Spanish conquest abandoning their best agricultural lands and moving to remote localities away from the Spanish. After some victories against the Spanish advances, Pedro de Valdivia was forced to command his army himself and go to sustain the battle of Limarí, where the Mapuche-Diaguita hosts were defeated and Pedro de Valdivia sent Juan Bohón to found the City of
La Serena at the mouth of the
Elqui River. In this context one of the reasons the Spanish had to establish the city of
La Serena in 1544 was to control Mapuche groups that had begun to migrate north following the Spanish founding of Santiago. The northern Mapuche, better known as
Promaucaes or
Picunches, unsuccessfully tried to resist the Spanish conquest.
Spanish expansion to the south (1544–1553) In 1544, a naval expedition was sent, comprising the
barks,
San Pedro and
Santiaguillo, under the command of
Juan Bautista Pastene, to reconnoiter the southwestern coast of South America to the
Strait of Magellan. The expedition set sail from
Valparaíso, entered the
bay of San Pedro, and made landings at what is now known as
Concepción and at
Valdivia, which was later named in honor of the commander. Encountering severe storms further south, he then returned to Valparaiso. Valdivia himself set out in 1546, with sixty horsemen plus guides and porters, and crossed the
Itata River and were attacked by
Mapuche warriors in the
Battle of Quilacura near the
Bío-Bío River. Realizing that it would be impossible to proceed in such hostile territory with so limited a force, Valdivia elected to return to Santiago after finding a site for a new city at what is now
Penco and that would become the first site of
Concepción. In 1550 Pedro de Valdivia, who aimed to control all of Chile to the
Straits of Magellan, traveled southward to conquer more Mapuche territory. Following these initial conquests the
Arauco War, a long period of intermittent war between Mapuches and Spaniards, broke out. A contributing factor was the lack of a tradition of
forced labour like the Andean
mit'a among the Mapuches who largely refused to serve the Spanish. Since the Spanish arrival in
Araucanía in 1550, the Mapuches frequently laid siege to the Spanish cities in the 1550–1598 period. The war was mostly a
low intensity conflict.
Campaigns of Caupolicán and Lautaro (1553–1557) Lautaro, an early Mapuche military leader. Painting by
Pedro Subercaseaux. In 1553, the Mapuches held a council at which they resolved to make war. They chose as their "
toqui" (wartime chief) a strong man called
Caupolicán and as his vice toqui
Lautaro, because he had served as an auxiliary to the Spanish cavalry; he created the first Mapuche cavalry corps. With six thousand warriors under his command, Lautaro attacked the fort at
Tucapel. The Spanish garrison was unable to withstand the assault and retreated to Purén. Lautaro seized and burned the fort and prepared his army certain that the Spaniards would attempt to retake Tucapel. Valdivia mounted a counter-attack, but he was quickly surrounded. He and his army was massacred by the Mapuches in the
Battle of Tucapel. In February 1554 Lautaro succeeded in putting together an army of 8,000 men, just in time to confront a punitive expedition under the command of Francisco de Villagra at the
Battle of Marihueñu. Lautaro defeated
Governor Villagra and later devastated the city of Concepción. In 1555 Lautaro went to the city of
Angol and destroyed it, he also returned to Concepción, rebuilt by the Spanish and destroyed it again. The outbreak of a
typhus plague, a
drought and a
famine prevented the Mapuches from taking further actions to expel the Spanish out of Chile in 1554 and 1555. Meanwhile, in the north during 1554, news of the victories of Lautauro led to uprisings by the previously subdued northern mapuche tribes in the valley of the
Mataquito River and the valley of the
Aconcagua River, but these were put down. In 1556 his northward march reached the
Mataquito River, where he established a fortified camp at
Peteroa. In the
Battle of Peteroa Lautaro repulsed attacking Spanish forces under the command of
Diego Cano, and later held off the larger force commanded by Pedro de Villagra. Being advised that still more Spaniards were approaching, Lautaro decided to retreat towards the
Maule River losing 200 warriors. With the Spaniards in hot pursuit he was forced to retire beyond the
Itata River. In 1557 Lautaro headed with his army to destroy Santiago to liberate the whole of
Central Chile from Spanish rule., In 1567 Spaniards conquered
Chiloé Archipelago which was inhabited by
Huilliches. In the 1570s
Pedro de Villagra massacred and subdued revolting Mapuches around the city of
La Imperial. Warfare in Araucanía intensified in the 1590s. Over time the Mapuche's of
Purén and to a lesser extent also
Tucapel gained a reputation of fierceness among Mapuches and Spaniards alike. This allowed the Purén Mapuches to rally other Mapuches in the war with the Spanish. Mapuche organization changed in response to the war and the
aillarehue, a new macro-scale political unit consisting of several
rehue, appeared in the late 16th century. By the late 16th century a handful of powerful Mapuche
warlords had emerged near
La Frontera.
Changes in population patterns The Mapuche population decreased following contact with the Spanish invaders.
Epidemics decimated much of the population as did the war with the Spanish. Others died in the Spanish gold mines. From archaeological evidence it has been suggested that the Mapuche of
Purén and
Lumaco valley abandoned the very scattered population pattern to form denser villages as a response to the war with the Spanish. Declining population meant that as agriculture diminished, many open fields in southern Chile were overgrown with
forest. In the late 16th century the indigenous Picunche began a slow process of assimilation by losing their indigenous identity. This happened by a process of mestization by gradually abandoning their villages (
pueblo de indios) to settle in nearby Spanish haciendas. There Picunches mingled with disparate indigenous peoples brought in from
Peru,
Tucumán,
Araucanía (
Mapuche),
Chiloé (
Huilliche,
Cunco,
Chono,
Poyas) and
Cuyo (
Huarpe). Few in numbers, disconnected from their ancestral lands, living next to the Spanish and diluted by , the Picunche and their descendants lost their indigenous identity. ==Independence and war (1598–1641)==