Title: 1966 World Series
Content:  for the third consecutive time and for 33 consecutive innings, a World Series record. The Orioles won Game 4 1–0 to sweep the World Series. The Orioles became the first American League team other than the Yankees to win the World Series since the 1948 Cleveland Indians. The Orioles also became the last of the original eight American League teams to win a World Series at all. The Orioles had played in the Fall Classic as the St. Louis Browns in the 1944 World Series, in which they were the last original AL team, and the last of the 16 teams that made up the major leagues from 
Title: 1966 World Series
Content:  the team down in 1967, and they finished second to the 103-win Detroit Tigers in 1968. They won three straight A.L. pennants from 1969–71 (winning over 100 games each season), as well as the 1970 World Series. The Orioles won the American League Eastern Division again in 1973 and 1974, but they fell to the Oakland Athletics dynasty, which went to (and won) the World Series three straight years. The Orioles returned to the World Series in 1979, but they lost to the Pirates in 7 games. The Orioles won at least 90 games in all but three seasons from 1968 through 1983, culminating in their 1983 World Series victory over the Phillies.
Title: 1966 World Series
Content:  to 1960, to participate in a World Series. They were also the second-to-last "Original 16" MLB team to win a World Series; the 1980 Philadelphia Phillies became the last team to do so 14 years later. Frank Robinson became the first non-pitcher from a winning World Series team to win the World Series MVP trophy. (Bobby Richardson had won it for the Series-losing New York Yankees in the 1960 World Series.) The Orioles became the second team in World Series history (the 1937 New York Yankees were the first), not to commit an error in a series of any length, handling 141 total chances (108 putouts, 33 assists).
Title: Baltimore Orioles
Content:  Of the eight original American League teams, the Orioles were the last of the eight to win the World Series, doing so in 1966 with its four–game sweep of the heavily favored Los Angeles Dodgers. When the Orioles were the St. Louis Browns, they played in only one World Series, the 1944 matchup against their Sportsman's Park tenants, the Cardinals. The Orioles won the first-ever American League Championship Series in 1969, and in 2012 the Orioles beat the Texas Rangers in the inaugural American League Wild Card game, where for the first time two Wild Card teams faced each other during postseason play. <ol type="A"> <li></li> <li></li> </ol>
Title: World Series
Content: 1) Every original team has won at least two World Series titles. The Philadelphia Phillies (National League) were the last of the original teams to win their first Series, in . They were also the last to win at least two, with their second Series victory in . The Cubs were the first team to win the series twice, in 1907 and 1908. ; 2) The last original American League team to win its first World Series was the Baltimore Orioles (former St. Louis Browns, originally the Milwaukee Brewers), winning in. ; 3) The Orioles were also the last original team 
Title: 1979 World Series
Content:  The 1979 World Series was the championship series of Major League Baseball's (MLB) 1979 season. The 76th edition of the World Series, it was a best-of-seven playoff played between the National League (NL) champion Pittsburgh Pirates (98–64) and the American League (AL) champion Baltimore Orioles (102–57). The Pirates won in seven games, becoming the fourth team in World Series history to come back from a three-games-to-one deficit to win the Series. This marked the second time in the 1970s the Pirates won a World Series Game 7 on the road against the Orioles, the previous time being in the 1971 World Series. The Pirates were famous for adopting 
Title: 1966 World Series
Content:  The 1966 World Series was the championship series of Major League Baseball's (MLB) 1966 season. The 63rd edition of the World Series, it was a best-of-seven playoff between the American League (AL) champion Baltimore Orioles and National League (NL) champion (and defending World Series champion) Los Angeles Dodgers. The Orioles swept the series in four games to capture their first championship in franchise history. It was the last World Series played before MLB introduced the Commissioner's Trophy the following year. The Dodgers suffered record low scoring, accumulating just two runs over the course of the series (both of which were in the first game), the lowest number of runs ever scored by any team in a World Series. This World Series marked the end of the Dodgers' dynasty of frequent postseason appearances stretching back to 1947. Conversely, it marked the beginning of the Orioles' dynasty of frequent postseason appearances that continued until 1983.
Title: World Series
Content:  During this seven-year period, only three teams won the World Series: the Oakland Athletics from 1972 to 1974, Cincinnati Reds in 1975 and 1976, and New York Yankees in 1977 and 1978. This is the only time in World Series history in which three teams have won consecutive series in succession. This period was book-ended by World Championships for the Pittsburgh Pirates, in 1971 and 1979. However, the Baltimore Orioles made three consecutive World Series appearances: 1969 (losing to the "amazing" seven-year-old franchise New York Mets), 1970 (beating the Reds in their first World Series appearance of the decade), and 1971 (losing to the Pittsburgh Pirates, as well their 1979 appearance, when 
Title: 1989 World Series
Content:  in between the Athletics' World Series triumph. The next championship for the city of Oakland came in 2015, when the Golden State Warriors of the NBA won the 2015 NBA Finals. Later, the Golden State Warriors would win the 2017 and 2018 NBA Finals, defeating the Cleveland Cavaliers. This would be the first time that the World Series ended in the last week of October, until the 2001 World Series when the 9/11 attacks delayed the NFL and MLB games for a week, and caused the World Series to end in November. The 1981 World Series also finished on October 28.
Title: 1989 World Series
Content:  The A's would return to the World Series the following season, making it three years in a row. However, they were unsuccessful in defending their championship as the Cincinnati Reds swept them in the 1990 World Series. Oakland has not returned to the World Series since then and has only made two appearances in the American League Championship Series—losing in 1992 to the Toronto Blue Jays and in 2006 to the Detroit Tigers—and a total of 11 times in the postseason (1992, 2000, 2001, 2002, 2003, 2006, 2012, 2013, 2014, 2018 and 2019) since the 1990 Series. At the time of the 

Question: when was the last time the orioles won the world series?
Answer: 1983 World Series.