Generally, you should not eat or during anything, including water, for eight hours before your oral surgery. If your type of oral surgery requires local anesthetic, have a light meal 1 to 2 hours before your oral surgery. Brush and floss your teeth prior to your appointment. Do not smoke at least 12 hours before your oral surgery. What an ideal opportunity to consider quitting, as smoking is not permitted for a minimum 24 hours after oral surgery.
Dashur: Black Pyramid of Amenemhat III. The Black Pyramid of Dashur was the first pyramid built by Amenemhat III (of the Middle Kingdom of Ancient Egypt) during the early part of his reign. Unfortunately the pharaoh failed to heard the warnings of history and so this pyramid is now in a rather poor state.
Mesoamerican peoples built pyramids from around 1000 B.C. up until the time of the Spanish conquest in the early 16th century. The earliest known pyramid stands at La Venta in Tabasco, Mexico. Built by the Olmecs, the first major Mesoamerican civilization, it dates to between 1000 B.C. and 400 B.C. American pyramids were generally built of earth and then faced with stone, typically in a stepped, or layered, shape topped by a platform or temple structure.