America's longest-serving prisoner in solitary has conviction quashed. Albert Woodfox, right, and Herman Wallace in Angola prison, in Louisiana. Woodfoxâs 1972 murder conviction was overturned when a US appeals court ruled his conviction was secured through racially discriminatory means.
Next, the Olmec created a complex drainage system. These inventions helped the Olmec survive. In addition to their inventions, they also understood many things in life, such as the concept of zero ,linear time, and gravity.
Known as the Olmec civilization, its early site is at San Lorenzo. From about 900 BC the capital city of the Olmecs moves further east along the Gulf coast to La Venta, an island site in the Tonala TonalÃ¡. River for the next 500 Years La venta is the cultural centre of a large, region trading with much of Central. america