It doesn't. The neck is straight, but the pegbox angles back. Guitars, mandolins, banjos and violins all do this too, so that the strings are pulled down against the nut (otherwise they would buzz), but the lute has a more extreme angle mostly to accommodate the larger number of strings without getting absurdly long. Lutes generally have two strings for each course, like a 12-string guitar, but have at least seven or eight courses rather than six like the guitar.
During the early middle ages ca. 700, the lute and the Oud entered Spain by force. The following growth in commerce and artistic exchange created a rich environment for lute consorts (groups of players). Several courts of noble ranking hired large numbers of lute players for their banquets. The performers played in somewhat crammed spaces. The bent back neck was just a practical solution by luthiers (instrument builders) to cope with the issue of space.
I can't find the answer to this bloody question
To fit the peg whole
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