Missouri is a state of importance in American history for the great western expansion. St. Louis and Kansas City are the primary cities of Missouri and are chief areas of economic transportation for the country. Missouri is frequently in the news because St Louis is the murder capital of America. One of Missouri’s main economic avenues is the Mississippi River. There are 6 million people in Missouri, and most of the state is considered rural. Along with agriculture, Missouri is well known for its mining. Missouri attracts tourists each year, and one of its hidden treasures is an extensive cave system.