This took place just after the United States completed of the Louisiana Purchase. They explored the western United States beginning in Missouri through the Mississippi to the Pacific coast. John Smith (c.1580-1631) Famous For: Exploring Virginia and Chesapeake Bay rivers
Video on demand (display) (VOD) are systems which allow users to select and watch/listen to video or audio content such as movies and TV shows when they choose to, rather than having to watch at a specific broadcast time, which was the prevalent approach with over-the-air broadcasting during much of the 20th century.
Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature.ost scents or odours are of VOCs. VOCs play an important role in communication between plants, and messages from plants to animals. Some VOCs are dangerous to human health or cause harm to the environment.