Historic canals are man-made waterways designed for navigation, irrigation, or drainage. They played a crucial role in trade and transportation, allowing goods to be moved efficiently between cities and regions. Notable examples include the Erie Canal in the United States and the Suez Canal in Egypt, which significantly impacted economic development. These canals often feature locks, which help boats navigate changes in water levels. Many historic canals have been preserved or restored, serving as popular recreational areas for boating, fishing, and hiking. They also offer insights into engineering practices and the history of transportation in various cultures.