Widely known as America's pastime, baseball is well established in several other countries as well. As early as 1877, a professional league, the International Association, featured teams from both Canada and the US. While baseball is widely played in Canada and many minor league teams have been based in the country, the American major leagues did not include a Canadian club until 1969, when the Montreal Expos joined the National League as an expansion team. In 1977, the expansion Toronto Blue Jays joined the American League.