Final answer:
The Chicago Cubs were said to be under the 'Curse of the Billy Goat,' which started in 1945 and was believed to prevent the team from reaching the World Series until they finally won in 2016.
Step-by-step explanation:
In the mythology surrounding the Chicago Cubs, the curse often cited for the team's long hiatus from the World Series is known as the Curse of the Billy Goat. This superstition originated in 1945 when the owner of the Billy Goat Tavern, William Sianis, was asked to leave a World Series game at Wrigley Field because his pet goat's odor was bothering other fans. Outraged by the ejection, Sianis allegedly declared that the Cubs would not win the World Series again. And indeed, the Cubs did not return to the World Series until they finally broke the curse in 2016, winning the championship after a historic 108-year drought.