Answer:
A partisan divide is a significant distinction between two groups, often one that causes conflict.
Explanation:
In politics a partisan would be a committed member of a political party or army. Hence, a partisan divide would be a divide between opposing partisans.
Discrimination, like you said, is an unjust treatment of a group of people normally on topics like race and gender.
Russia/Soviet union is the incorrect paring of pre-world 1nation I think.
Answer:
Marco introduced gunpowder to China.He encourage trade a long silk road.Open up China to the rest of the world