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.
Sites containing traces of the Olmec civilization are found mainly on the southern coast of the Gulf of Mexico, specifically in the states of Veracruz and Tabasco. Although the Olmecs did have a system of writing, only few of their inscriptions are available to archaeologists at present.exico is perhaps most well-known, archaeologically speaking, as the home of the Aztec civilization. Yet, before the arrival of the Aztecs, another sophisticated civilization, the Olmecs, ruled the region for almost 1000 years.