If one of the intervening states was a superpower, a civil war is a further 72% longer; a conflict such as the Angolan Civil War, in which there is two-sided foreign intervention, including by a superpower (actually, two superpowers in the case of Angola), would be 538% longer on average than a civil war without any international intervention.
Shellac is a wood finishing product made by dissolving dried resin in denatured alcohol. Shellac was used heavily for finishing furniture during the 19th and early 20th centuries, and it is still available for use today. The product is popular due to its ease of application, low odor, and all-natural origin.
The story of shellac starts with a small scaly insect in India that is attracted to the twigs of several species of tree.he bugs suck the sap from the tree for nourishment and as part of their reproductive process excrete a resin to protect themselves and their eggs. This resin is called lac and is the raw material used to make shellac. Huge insect populations build up thick layers of resin covering the branches and twigs of the trees.