How did the development of the magnetic compass impact the Song dynasty? A) It slowed the spread of diseases out of Europe.

B)It allowed travelers to navigate more accurately.

C)It prevented traders from entering the region.

D)It allowed Buddhism to become popular in the region.

by inventing the magnetic compass

Explanation:

B? I think

Explanation:

The Song dynasty was an imperial dynasty of China that began in 960 and lasted until 1279. The dynasty was founded by Emperor Taizu of Song following his usurpation of the throne of the Later Zhou, ending the Five Dynasties and Ten Kingdoms period.  so I thinks its b

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."