Cesar Chavez and Dolores Huerta founded togheter the National Farmworkers Association in 1962, they had a 3 dollar a month fee per memeber that granted all members a funeral insurance and loans with only 1% interests rates, this was the start of the defense of the FarmWorkers as we know it today, they fought hard for rights and equality for all farmworkers in america.
Technology. Sumerians invented or improved a wide range of technology, including the wheel, cuneiform script, arithmetic, geometry, irrigation, saws and other tools, sandals, chariots, harpoons,