Read it through once

We are also informed by Patrick Henry, Chief Justice Tiglman, Chancellor Kent, Henry Clay, Daniel Webster, Justice Shaw, Chief Justice Parker, Edward Everett and others, that no union of these states ever could have taken place, had not the right to hold slave property, and the sole right to control that property been conceded to the southern States. And, Edward Everett, moreover, tells us that the northern States "deemed it a point of the highest policy, to enter with the slave states into the present Union." The reader will observe, that a majority of the authorities referred to, are northern men of the highest distinction.