Which of the following is incorrect about the cultures prior to Mature Harappan Culture?

These cultures were having many large buildings

Key features of Early Harappan Culture:
Prior to the Mature Harappan culture, there were various archaeological cultures in the region, each with distinct pottery styles and evidence of agriculture and pastoralism.
These earlier cultures were characterized by small settlements and a lack of large buildings.
The presence of distinctive pottery, evidence of agriculture, and some crafts in these earlier cultures highlights their significance in understanding the development of the Harappan civilization.
There was a break between the Early Harappan and the Harappan civilisation. This is evident from large-scale burning at some sites, as well as the abandonment of certain settlements.