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.
Written By: Olmec, the first elaborate pre-Columbian civilization of Mesoamerica (c. 1200â400 bce) and one that is thought to have set many of the fundamental patterns evinced by later American Indian cultures of Mexico and Central America, notably the Maya and the Aztec.