Answer:
copper and tin; but gold, silver, aluminum, copper, brass, lead, and iron have also been widely used.
Explanat
Answer:
Motion Picture Patents Company
Explanation:
It was known as MPPC or Edison Trust. It was created in 1908 but only worked for seven years due to industry difficulties. It was made of basically the most important film companies in the United States and foreign-branches. Some of them were: Eastman Kodak, Biograph, Vitagraph, Lubin Manufacturing, Essanay, among others.
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