Which were characteristics of early civilization in the indus valley?

 The characteristics of early civilization in the Indus Valley are "streets designed in a grid pattern and cities including Mohenjo-Daro".

Explanation:

The civilization of the Indus River developed around 3000 BCE and burgeon for about 1500 years before entering a period of decline mysteriously. The huge research resulted into name of sites as Harappa after a nearby village and to Mohenjo Daro, a local term meaning "hill of the dead."

Harappa and Mohenjo Daro were cities designed with expert planning and a grid pattern of wide, straight streets. The city was covered by thick walls.Most people lived in solid, multiple-story brick houses. Several houses had toilets and bathrooms, linked with the first sewage system in the world.