(1493) Columbus reaches the island, calls it San Juan Bautista
(1508) Juan Ponce de León forms the first permanent colony
(1511) Taínos rebelled against Spanish rule, but are forced to surrender or flee
Diego Columbus given control of the island
(1528) French troops attacked the island
(1529) Authorities on the island requested further defenses
(1530) Casa Blanca replaced by a stone building; Authorities on the island requested further defenses
(1532) La Fortaleza in Santa Catalina began construction
(1536) The Columbus family relinquished its political rights to the island
(1540) La Fortaleza finished construction; Villa de San Germán fort under construction; El Morro in San Juan under construction
(1542) Villa de San Germán fort completed construction
(1545) System of Alcaldes-Gobernadores abolished; Gobernador letrado leads colony
(1564) Gobernado letrado becomes military captain-general
(1585) Spain and England engage in war
(1586) British Sir Francis Drake destroy many Spanish settlements in the region
(1588) Spanish Armada defeated by England
(1589) El Morro fortress construction completed
(1595) Queen Elizabeth sends Drake and John Hawkins to take Puerto Rico
(1598) King forbids growth of ginger
(1602) Epidemic strikes Puerto Rico
(1603) Queen Elizabeth dies; James I ascends the British throne and makes peace with Spain
(1608) Epidemic strikes Puerto Rico
(1625) Dutch attack Puerto Rico
(1632) Idea of walling San Juan city was reignited
(1634) Ground was broken on the construction of a city wall
(1638) Wall was finished
(1688) San Germán gained its own parish church
(1701) War of the Spanish Succession begins
(1736) Coffee introduced to Puerto Rico from Hispaniola
(1739) War of Jenkins' Ear begins
(1755) Spain's crown created the Compania de Barcelona
(1765) Alejandro O'Reilly reports on Puerto Rico for the crown
(1778) Foreign immigration allowed by royal decree
(1785) Real Factoría develops as a royal monopoly on trade with the Netherlands
(1796) Spain joins the war against England (American Revolutionary War)
(1797) British attempt to take San Juan
(1808) Peninsular War begins between France (Napoleon) and Spain
(1810) South American Spanish colonies revolt under Simón Bolívar
(1812) War of 1812 disrupts trade with the U.S.
(1815) King Ferdinand VII in Spain restored; introduces Real Cadula de Gracias
(1820) Slave trade banned nominally
(1825) Governor of Puerto Rico given nearly unlimited powers on the island
(1845) Slave trade banned by Britain and pressure put on Spain to enforce ban
(1849) Enforced labor on Puerto Rico
(1868) Grito de Lares (Lares Revolt)
(1873) Enforced labor stopped for Puerto Rico
(1898) Autonomy given to Puerto Rico by Spain; Spanish-American War breaks out; U.S. gains Puerto Rico in War
(1900) Foraker Act passes
(1917) Jones Act passes
(1947) Industrial Incentive Act passes
(1948) Puerto Rico's first election for governor, Luis Munoz Marín wins
(1950) Public Law 600 enacted, allows Puerto Rico to write its own Constitution
(1952) Puerto Rico becomes a Commonwealth
(1967) Puerto Rico votes to remain a Commonwealth
(1998) Puerto Rico votes to remain a Commonwealth
(2006) Puerto Rico closes government offices due to financing issues