the chocolate with milk was invented by the swiss people, in 1875. By this discovery the two boys who made it, created Nestlé, one of themost important chocolate companies actually, and Vevey, the town where it was invented, passed to be the chocolate santuary.
After this, the consuption of cocoa multiplied by twelve!!!. Now the XX century is considerated the Chocolate Century.
This is a picture of this delicious kind of chocolate: