The answer is B , It is the job of the United States to protect the world from terrorism.
Taking care of the people, what ever natural disaster or basically any bad going on they were responsible for it.
The Qin dynasty was the first dynasty to start connecting the various walls into a greater whole. That happened around 221 to 206 BC and was done under the reign of Qin Shi Huang. Though the wall was later improved still by other dynasties, it was during the Qin dynasty that the Great Wall of China was first formed into a cohesive structure.
A. It was hard for them to find a job or get a raise.
They used canons,guns,and fought in long lines to throw the enemy off.
