Final answer:
The Indus Valley Civilization had advanced plumbing and urban drainage systems within their cities, which was not common in the Egyptian and Mesopotamian civilizations.
Step-by-step explanation:
The Indus Valley Civilization, which existed between 2600 and 1900 BCE, was notable for its advanced plumbing systems in cities, a feature not commonly found in contemporary ancient civilizations such as Egypt and Mesopotamia. The urban centers of this civilization, including Harappa and Mohenjo-Daro, featured sophisticated drainage systems and indoor toilets that connected to a citywide drainage network. These advanced plumbing systems showcase the Indus Valley Civilization's attention to sanitation and urban planning.
In contrast to the Egyptians and Mesopotamians, who are known for their monumental architecture, the Indus Valley Civilization focused on practical and efficient city designs. Despite lacking in massive monuments, their homes and public buildings like bathhouses demonstrated a highly organized society with ordered streets and standardized construction.