Harappa and Mohenjo-Daro, prominent cities of the Indus Valley Civilization, attracted residents through advanced urban planning, including well-organized streets and sophisticated drainage systems, which enhanced sanitation and living conditions. The cities also boasted access to fertile agricultural land and a reliable water supply from nearby rivers, supporting sustainable farming. Additionally, their strategic locations facilitated trade with neighboring regions, offering economic opportunities and access to diverse goods, further enticing people to settle there.