What are schnauzers and where do they come from?

Schnauzers came from Germany, it first started with the standard schnauzer in the beginning of the 1800's breeding it with bigger dogs and smaller dogs which is what you see today. Their are 3 types of schnauzers the Giant Schnauzer, The Standard Schnauzer, and the Miniature Schnauzer. The 3 didn't get classified as different breed until about 60 years later.