1. What is a Dageurreotype? That was the first commercially successful photographic process. Louis Dageurre discovered it. The image is a direct positive made in the camera on a silvered copper plate. The Daguerrotype process replace the camera obscura.
2. What is an "albumen" print?
You called it also: albumen silver print, was invented in 1850 by Louis Désiré Blanquart-Evrard. It was the first commercially exploitable method of producing a photographic print on a paper base from a negative.
The process of making an album print:
You have a normal white paper, it is coated with egg white. You dipp the paper in a solution of silver nitrate and water. Than you dried the paper, and you can not do that with UV-light. The dried, prepared paper is placed in a frame in direct contact under a negative. After that you give them a bath of of sodium thiosulfate fixes. 
3. What is a "stereograph?
The stereograph is discovered by Charles Wheatstone in 1838. Stereograph is any image that, through one of several techniques, is able to convey the experience of depth perception to the viewer by means of stereopsis for binocular vision.
In the early 1900 was it really populair.
4. What is a "carte de visite?"
It was a type of small photograph which was patented in Paris, France by photographer André Adolphe Eugène Disdéri in 1854. They were used for visitcards, of photocards. They are sending it to family of their love. They were really populair in the Civil war.
5. Who were Matthew Brady and Alexander Gardner? They both are notable for what type of photography? When were they active? Post two noteworthy photographs for each photographer.Matthew Brady was one of the most celebrated 19th century American photographers, best known for his portraits of celebrities and his documentation of the American Civil War.
Alexander Gardner was a Scottish photographer who moved to the United States in 1856, where he began to work full-time in that profession. He is best known for his photographs of the American Civil War, American President Abraham Lincoln, and the execution of the conspirators to Lincoln's assassination.They were both active in the Civil war. So that is why they important are.
