YEAR	MILESTONE
1950s	Idaho's first leagues are formed, and compete alongside charters from other states in district tournament competition. A group of leagues in and around Pocatello competes against Utah-based leagues, while leagues in Northern Idaho are funneled into districts alongside leagues from Washington state. The Pocatello leagues switched their affiliation to a different youth baseball organization in 1956, and by the early 1960s, no Idaho leagues are competing in the international tournament.
1962	Little League gains a more expansive foothold in Northern Idaho, and four leagues gather in Wallace to contest the first Idaho state tournament. Wallace wins the tournament, and advances to a multi-state sectional tournament involving the champions of Montana, South Dakota, and the Prairie Provinces. The winner of this tournament advances to the Western Region Division 4 tournament. Idaho leagues will continue to advance to multi-state sectional or divisional tournaments until 1972, and begin international tournament competition at the state tournament level until the early 1980s.
1972	The Idaho state champion advancing directly to the Western Region tournament rather than first competing in a divisional tournament. Idaho's champion has continued to advance directly to regional tournament competition in every year since this time.
1980	For the first time, leagues are chartered in the Boise area, and the state tournament includes a record eleven entrants. Also in 1980, the state tournament uses a double-elimination format for the first time.
1982	Sixteen leagues -- eight in Northern Idaho and eight in Southern Idaho -- enter the international tournament. To mitigate travel requirements, Idaho officials divide the state into two area tournaments, and each area sends one undefeated and one once-beaten league to the state finals.
1983	District 2 (Southern Idaho) is formed as a split from District 1 (Northern Idaho). The two district champions meet in a best two-of-three state championship series format that is still used today.
2001	Idaho is assigned to the Northwest Region as Little League Baseball expands the Little League World Series from eight to sixteen participants.

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