Interesting facts about paint  

1. People have been painting for nearly 30,000 years. 
2. The earliest known oil paintings date back to the 14th century..
3. Artists used to store their paintings in animal bladders to dry them. 
4. World War II affected styles of paintings dramatically. 
5. Oil paint takes two weeks to dry. 
6. At one point Ultramarine was the most expensive paint because it was made from Lapis Lazuli. 
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