Which ancient civilization, known for its major cities such as Harappa and Mohenjo-Daro, is most distinguished by its sophisticated and consistent urban planning, featuring grid street patterns and highly advanced municipal drainage and sanitation systems?

💡 Explanation:

The Indus Valley Civilization (also known as the Harappan Civilization) is unique among ancient societies for its level of consistent and advanced urban infrastructure, featuring standardized brick sizes, a rigid grid system, and complex covered drainage and sewage systems for sanitation.