Final answer:
The sufferance of the colonies and the history of the King support the conclusion that America must form its own government.
Step-by-step explanation:
The statement in the Declaration of Independence, “Such has been the patient sufferance of these colonies; and such is now the necessity which constrains them to alter their former systems of government,” supports the conclusion that America must form its own government because it highlights the long history of abuses and tyrannical actions by the British King. The sufferance of the colonies indicates their need for a change in government, as the king's actions have violated their rights and established a tyranny over the states. By stating their patient sufferance and the necessity to alter their former system of government, the colonists are asserting their right and duty to throw off such government and provide new guards for their future security.