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Although the exact date in which the bowling ball was invented is unknown, many believe the bowling ball was invented around 3200 BC
http://www.bowlingball.com/BowlVersity/bowling-ball-evolution -
According to the figures found underground discovered by Italian archaeologists, the Bowling Ball was invented in Egypt between the 2nd and 3rd century AD. The bowling balls were made of husks of grains.
http://www.abc.net.au/science/articles/2007/07/27/1989990.htm -
The bowling ball was improved by being molded with corn husks and with leather or string for better game-play amongst those who participated in the sport. The date in which these improvements occurred is unknown.
http://www.murreybowling.com/the-evolution-of-the-bowling-ball/ -
Holes for fingers were added to bowling balls to help one grip the Bowling Ball. This modification occurred in the mid-1300's.
http://www.madehow.com/Volume-4/Bowling-Ball.html -
The modern day bowling ball was invented on December 29th, 1862.
http://bleacherreport.com/articles/315926-today-1862-the-modern-day-bowling-bowl-is-invented -
The first rubber bowling ball was invented in 1905, increasing the popularity of bowling. The month and day are unknown.
http://www.madehow.com/Volume-4/Bowling-Ball.html -
The Bowling Ball was now made up of polyester as of 1970. The month and day are unknown.
http://www.madehow.com/Volume-4/Bowling-Ball.html -
In the 1990's, the core of Bowling Balls were modified by computers. The month and day are undetermined.
http://www.madehow.com/Volume-4/Bowling-Ball.html
