miles (320 km) from pre-development times. Although the lower Missouri valley is now a populous and highly productive agricultural and industrial region...

the people be the supreme law." Archaeological excavations along river valleys have shown continuous habitation since about 9000 BCE. Beginning before...

ancient villages. Of particular note in the south is the Val di Cecina, the valley of the Cecina River, and the ancient city of Volterra to the west. The southern...

during the rule of the Spanish Empire. The Spanish log fort San Juan del Misuri (1796–1803) was built in present-day Washington. After the American Revolutionary...