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.
As the Maya slowly took over the region from the Olmec, the Maya built on the many clever ideas of these earlier people. For example, the Olmec created a solar calendar. The Maya, using their knowledge of astronomy, and building on the Olmec solar calendar, created the most accurate calendar in the ancient world.The Maya also created inventions of their own, inventions like the vast underground reservoirs that held fresh water safely in times of drought.he Maya, using their knowledge of astronomy, and building on the Olmec solar calendar, created the most accurate calendar in the ancient world. The Maya also created inventions of their own, inventions like the vast underground reservoirs that held fresh water safely in times of drought.