Answer:
2.They were economically strong.
4.They ruled for about 300 years.
Explanation:
Both dynasties ruled about 300 years: the Tang Dynasty from 618 to 907 and the Song Dynasty from 960 to 1279.
Likewise, both economies were strong and based mainly on ocean trade in which silk was the largest export, this was thanks to the Grand Canal (built during the Tang Dynasty) which was the world’s longest canal at the time and linked China to the West and encouraged north-south trade within China. Furthermore, during this era, numerous inventions emerged such as the magnetic compass for sailing, paper money, porcelain, the mechanical clock and gunpowder, and the technology and science advanced to the point that China became the most advanced in the world during this era.
3. goes with a, 2. goes with b, and 1. goes with c
<span>The
Northern politicians and lawmakers were against going to war with Mexico
because they feared that any territory that the U.S. would acquire in that area
would be turned into more slave states. The U.S. has already been maintaining a
difficult balance between Free State and slave state and there were already a
lot of slave owners who were making their way to Mexico. </span>
A. at St Louis ,Missouri River, Columbia river ,Pacific Ocean
its B. They failed to produce enough consumer goods, including food,
