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.
The Olmec were the first civilization in the Americas {Not the first people}. When they arrived is not known, but a guess of 8,000-4000 B.C. should do. Recent research suggests that the Olmec had their roots in early farming cultures of Tabasco, which began between 5100 BCE and 4600 BCE. These shared the same basic food crops and technologies of the later Olmec civilization.