Whats significant about benjamin franklin's "join or die"?

The difference between the use of Join or Die in 1754 and 1765 is that Franklin had designed it to unite the colonies for 'management of Indian relations' and defense against France, but in 1765 American colonists used it to urge colonial unity against the British.

answer; i believe that the correct answer is,lies(political rhetoric);

whose power in the senate is equal to the power of the speaker of the house?