Gold is one of the fundamental resources of Civilization. The accumulation of gold allows a Civilization to pay its citizens <l:6,87>wages<e>, initiate scientific research to obtain <l:6,66>Advances<e>, and purchase <l:6,65>improvements<e>, units, and <l:6,64>Wonders<e> (through the Rush Buy button). Gold is generated by collecting <l:6,94>goods<e>, engaging in <l:6,58>trade<e>, or assigning citizens to work certain terrain tiles. <l:6,102>Merchants<e>, improvements, and Wonders, as well as <l:6,81>government<e> types can increase gold.