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.
By Christopher Minster. The Colossal Heads of the Olmec: The Olmec civilization, which thrived along Mexico's Gulf Coast from approximately 1200 - 400 B.C., was the first major Mesoamerican culture. They were extremely talented artists, and their most lasting artistic contribution is without a doubt the enormous sculpted heads they created.