Macadamization is a method of road construction that involves layering crushed stone to create a durable surface. Named after engineer John Loudon McAdam, this technique uses small, angular stones that interlock to form a solid base. The process typically includes a compacted layer of larger stones followed by finer materials, which helps with drainage and stability. This technique was popular in the 19th century and significantly improved road quality, making travel easier and safer. Macadamized roads are known for their ability to withstand heavy traffic and weather conditions, contributing to the development of modern transportation networks.