Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions. Cinder cones are the smallest volcanoes and result from accumulation of many small fragments of ejected material.
Powerful empires were built, Written and spoken languages were made and perfected, and new technology was created
Price control is the maximum cost of a good decided by the government. Therefore if a company stays at the price control maximum a competing company may lower the price in order to have the better deal. Another company may lower the price further which creates competition between the businesses. <span />