What are Piragos? Define Dujo​

A room or hall in which judo and other martial arts are practised.

Explanation:

Historically, surnames evolved as a way to sort people into groups - by occupation, place of origin, clan affiliation, patronage, parentage, adoption, and even physical characteristics (like red hair). Many of the modern surnames in the dictionary can be traced back to Britain and Ireland.

d: social contract theory

agriculture revolution