What were some events that encouraged the boston massacre?

The tension produced by the military occupation of Boston, was increased after the firings of a group of soldiers against a group of nobles who were protesting against the rise of rates on the part of England.

The answer is: British soldiers fired on a crowed of troublemakers.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

the answer would be cities along the east coast.