Answer:
B. to keep invaders out
Explanation:
The wall was built to help keep out northern invaders like the Mongols. Smaller walls had been built over the years, but the first Emperor of China, Qin Shi Huang, decided that he wanted a single giant wall to protect his northern borders.
I think its C. they recognized Abu Bakr as the rightful caliph of islam.
Answer:
It set a precedent for monarchs sharing power with Parliament. It meant that France and Spain would never again challenge England. It did away with the constitutional monarchy.
