According to INDEXDOTCOM, Iowa was home to numerous Native American tribes for thousands of years before Europeans arrived in the region. The first Europeans to explore the area were French explorers Jacques Marquette and Louis Joliet, who arrived in 1673. In the early 1800s, Iowa was part of the Louisiana Purchase and became part of the United States. During this time, settlers began to move into the region and establish towns. In 1838, Iowa officially became a territory and by 1846 it had become a state. During the Civil War, Iowa was a major contributor to Union forces and provided more than 90,000 soldiers to fight for the Union cause. After the war ended, Iowa experienced rapid growth as new immigrants came into the state looking for work on farms or in factories. This growth continued throughout the late 19th century and early 20th century. In recent decades, Iowa has become an important agricultural state with corn being its biggest crop along with soybeans, oats and hay. It has also become a leader in renewable energy production with its wind turbines providing much of its energy needs. Check Agooddir for more about Iowa.