What is the answer i need help for number 12 and 13

In what two ways were the tang and song dynasties of china similar? they jointly built the grand canal. they were economically strong. they had weak military forces. they ruled for about 300 years. they discouraged buddhist ideas.

According to justice brown's opinion, social equality must be the result of what three factors?

Acharacterized by intimate, long-term, face-to-face association and cooperation. primary group community clique secondary group