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B.C. MEDIUM DEVELOPMENTS. 4000 B.C. Boiled tree sap, called pitch, was distilled into turpentine as a paint thinner for the resin paints. Also, alcohol was fermented as a drink and as a thinner for alcohol based paints, made from another tree sap or grapes.
A Space Colony is when a colony is not on the surface of a planet, but instead is a huge space station. They are discussed in detail here.. And when a mature colony starts making noices about "No Taxation Without Representation", the time is ripe for a War of Independence.