Both yes and no. Yes as in the massacre happened and many of the people shot civilians during the massacre. They weren't as in Captain Preston was found not guilty and many historians believe that he did not order the soldiers to attack but that the soldiers attacked of their own free will. There are even many who claim that it was self defense and that nobody was guilty except for the colonists.
It is a recognised human right (Article 18 of the ICCPR and UDHR) and has been referred to as "the first freedom" to the Constitution (America).
Trees require more moisture because unlike other plants they must have way for transporting mineral nutrient as relatively great distant from their roots to their leaves.
The correct answer is D) Local leaders used bribery to gain power to challenge the throne.
A series of weak emperors affected the Han dynasty in that local leaders used bribery to gain power to challenge the throne.
However, we have to consider that the collapse of the Hang Dynasty in ancient China was the combination of several factors, not just one.
Of course, weak and bad rulers did not have the leadership and vision to maintain the privileged economic and political situation that inherited. Bu also corruption and bribes. There was also the empress's influence in decisions and the eunuchs that lived in the court that considered that they were too young to be the emperors. And of course, let's not forget the importance and consequences of the Yellow Turban Revolt, a peasant rebellion in the year 184.