Iam in 8th grade, and i know nothing about math! its like my teacher is speaking a different language! i am in a lot of trouble, is anyone able to me?

1) union forces launched a surprise attack.

2) more confederate troops arrived by train.

3) union forces retreated.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity