It's Latin and refers to citizenship not by place of birth but by having both parents from a certain location.
Explanation:
A system called jus sanguinis is when a person obtains citizenship within their fathers or families. Jus sanguinis the is a principle of community law by which citizenship is not restricted by place of birth but by having one or both parents who are citizens of the state. Children at birth may automatically be citizens if their parents have state citizenship or political connections of ethnic, cultural, or other origins. Citizenship can also apply to kids whose parents belong to a diaspora and were not themselves citizens of the country granting citizenship
The Sunnah is made up of the words and actions of Muhammad, the prophet of Islam. Muslims believe Muhammad's life is a good model for them to follow in their own lives.
Hagia Sophia was built under Justinian the first and he ordered many roman style corinthian columns and greek style hellenistic columns imported from Lebanon to support the structure. The famous dome of course was built in the Ottoman style seen on many Islamic architecture today.