A lottery is a form of legalized government gambling that involves the drawing of numbers for a prize. Lotteries are outlawed by some governments, while others endorse it to the extent of organizing a national or state lottery. It is common to find some degree of regulation of lottery by governments; the most common regulation is prohibition of sale to minors.
Though lotteries were common in the United States and some other countries during the 19th century, by the beginning of the 20th century, most forms of gambling, including lotteries and sweepstakes, were illegal in the U.S. and most of Europe as well as many other countries.
This remained so until well after World War II. In the 1960s casinos and lotteries began to re-appear throughout the world as a means for governments to raise revenue without raising taxes - wikipedia
Lotteries come in many formats. For example, the prize can be a fixed amount of cash or goods. In this format there is risk to the organizer if insufficient tickets are sold. More commonly the prize fund will be a fixed percentage of the receipts.
A popular form of this is the "50–50" draw where the organizers promise that the prize will be 50% of the revenue. Many recent lotteries allow purchasers to select the numbers on the lottery ticket, resulting in the possibility of multiple winners.
# El Gordo
In Spain, they do the lottery differently. First of all, it’s a country-wide obsession — about 75% of Spaniards buy a ticket. There’s more than one lottery in Spain, but the one that Spaniards are the most passionate about is “La Lotería de Navidad” (“The Christmas Lottery”). This lottery has taken place every year since 1812.
https://dts.podtrac.com/redirect.mp3/media.blubrry.com/99percentinvisible/dovetail.prxu.org/99pi/23bae3e2-37ab-4194-ae39-0e16024d9b6a/268-El-Gordo.mp3
99% Invisible - player.fm
For better or worse, lotteries have long been considered by governments as useful ways to raise funds for public programs. But lotteries were, and still are, thought to be regressive taxes on the poor.
Karl Marx called them a sinister instrument of the state, designed to dupe the poor into believing there was an easy way out of poverty. The church found lottery play to be blasphemous and superstitious.
In 1862, Spain responded to the criticisms as well: by re-designing their national lottery so that it wouldn’t take as much money from the poor. The government thought if the they set the price of tickets high, only rich people would buy them. But that’s not what happened. People began “syndicate” playing, or playing in groups. The lottery became more popular than ever.