of the battles, New York ultimately sent the most soldiers and money to support the Union cause. Thereafter, the state helped create the industrial age and consequently was home to some of the first labor unions. During the 19th century, New York City became the main entry point for European immigrants to the United States, beginning with a wave of Irish during their Great Famine. Millions came through Castle Clinton in Battery Park before Ellis Island opened in 1892 to welcome millions more, increasingly from eastern and southern Europe. The Statue of Liberty opened in 1886 and became a symbol of hope. New York boomed during the Roaring Twenties, before the Wall Street Crash of 1929, and skyscrapers expressed the energy of the city. New York City was the site of successive tallest buildings in the world from 1913 to 1974. The buildup of defense industries for World War II turned around the state's economy from the Great Depression, as hundreds of thousands worked to defeat the Axis powers. Following the war, the state experienced significant suburbanization around all the major cities, and most central cities shrank. The Thruway system opened in 1956, signaling another era of transportation advances. Following a period of near-bankruptcy in the late 1970s, New York City renewed its stature as a cultural center, attracted more immigration, and hosted the development of new music styles. The city developed from publishing to become a media capital over the second half of the 20th century, hosting most national news channels and broadcasts. Some of its newspapers became nationally and globally renowned. The state's manufacturing base eroded with the restructuring of industry, and the state transitioned into service industries. Prehistory The first peoples of New York are estimated to have arrived around 10,000 BC. Around AD 800, Iroquois ancestors moved into the area from the Appalachian region. The people of the Point Peninsula complex were the predecessors of the Algonquian peoples of New York. By around 1100, the distinct Iroquoian-speaking and Algonquian-speaking cultures that would eventually be encountered by Europeans had developed. The five nations of the Iroquois League developed a powerful confederacy about the 15th century that controlled territory throughout present-day New York, into Pennsylvania around the Great Lakes. For centuries, the Mohawk cultivated maize fields in the lowlands of the Mohawk River, which were later taken over by Dutch settlers at Schenectady, New York when they bought