What was the issue that caused a group of men and boys to begin to attack some british soldiers standing guard that led to the boston massacre? who would successfully defend them on murder charges?

The incident occurred on March 5, 1770, it began with a minor thing, a street brawl between a group of American colonists and one British soldier, but it turned into chaos. Some 2,000 British soldiers had been occupying Boston - it had a 16,000-inhabitant population then - and were forcing American colonists to pay taxes owed to the British crown. The colonists found those tax laws unfair, abusive.

As an irony of history, the lawyer that took charge of the defendants at their trial was colonist John Adams, who would be president of the United States.

Explanation:

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.