Why are stereoscopes no longer popular

Stereoscopes no longer popular because they takes so much time to take a photographs

Explanation:

Stereoscopes are the devices with which two pictures of the same objects are taken from two different angles like with the right eye angle and the left  eye angle and then are viewed together so that these pictures can be seen which will create impression of depth and solidity of the pictures. But these are no longer used much these days because of the work involved in the way photographs are takes a lot of time and is tiring work.  

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.