Dual revolution Louis Blanc, Pierre Joseph Proudhon, and Karl Marx who attempted to come up with ideas for “utopias”, conservative and socialist societies. The French Revolution began in 1789 with the Tennis Court Oath, by which the members of the third estate, who had been locked out of the meeting the estates general, gathered together and swore not to disband until they had written a new constitution. Inspired by the ideas of Enlightenment Philosophers, most prominently Rousseau and his social contract, the National assembly, those who had sworn the tennis court oath, published the Declaration of the Rights of Man and Citizen.
Tennis court been used at the Australian Open since 1988 and the US Open since 1978. "Carpet" in tennis means any removable court covering. Indoor arenas store rolls of rubber-backed court surfacing and install it temporarily for tennis events, but they are not in use any more for professional events. A short piled form of artificial turf infilled with sand is used for some outdoor courts, particularly in Asia. Carpet is generally a fast surface, faster than hardcourt, with low bounce. Notable tennis tournaments previously held on carpet courts were the WCT Finals, Paris Masters, U.S. Pro Indoor and Kremlin Cup. Since