While europe was busy with feudal systems and wars during the 11th century, what was china becoming known for? select all that apply.

1. dramatic arts and music
2. technological advancements
3. economic growth
4. expansion of cities
5. military strength

Here are the answers to the given question above. While Europe was busy with feudal systems and wars during the 11th century, China was becoming known for the following: technological advancements, economic growth and expansion of cities. The answers would be options 2, 3 and 4. Hope this answer helps. 

1) union forces launched a surprise attack.

2) more confederate troops arrived by train.

3) union forces retreated.