Source B corroborates the notion that the declaration of independence was motivated by a range of oppressive actions by the British government, not just new taxes.
Source B, which is an excerpt from Thomas Jefferson's "The Declaration of Independence," supports the idea that the American colonists declared independence from Great Britain due to grievances beyond just new taxes. While taxation without representation is mentioned in the list of grievances, there are other significant issues cited in the text that go beyond taxation.
The excerpt mentions repeated injuries by the King of Great Britain, including the presence of standing armies in times of peace without the permission of the colonists' legislatures, cutting off trade with all parts of the world, and suspending the colonists' own legislatures while declaring the British government's power to legislate for the colonies in all cases. These grievances indicate a broader dissatisfaction with various actions taken by the British government, and not solely focused on new taxes.
Therefore, Source B corroborates the notion that the declaration of independence was motivated by a range of oppressive actions by the British government, not just new taxes.