What issue more than any other seemed to unite separate colonial interests into rebellion from Great Britain?

From the year 1760 until the early 1770s, settlers were more and more opposed to British imperial policies; and something in common that affected everyone alike, tax policies and border policies. When the Colonists' protests failed to persuade the British to change their policies; and on the contrary, Great Britain ordered the closure of the port of Boston, and made use of martial law in the city of Massachusetts, the governments of the 13 Colonies sent delegates to a Continental Congress to summon to a colonial boycott of the British goods. Thus, taxes and border restrictions were common conflicts that all settlers suffered