Capt. Cook & the Americans, 1778

From The Wide Wide Sea: Imperial Ambition, First Contact and the Fateful Final Voyage of Captain James Cook, by Hampton Sides (Knopf Doubleday, 2024), Kindle pp. 226-227:

On the other side of North America, the revolt against England had deepened into a bitter war that showed no signs of abating. At that very moment, British troops were occupying Philadelphia, while George Washington’s bedraggled army was beginning to stir from its winter quarters at Valley Forge. The war was taking on an international flavor. Shortly after the Resolution and the Discovery left the Hawaiian Islands, Benjamin Franklin and two other American commissioners had signed a treaty in Paris that intimately bound France to the rebellious colonies. With the stroke of a pen, France became the first nation to recognize the United States as a sovereign country. An outraged Britain would soon declare war on France, thus fully bringing the French into the American conflict.

Despite all of this, Benjamin Franklin would later make a point of lobbying among his colleagues for Captain Cook and the Resolution to be granted special immunity not afforded to other British ships. Should American vessels encounter Cook anywhere on the high seas, they were to give him leeway and clemency. Cook was on an assignment of transcendent importance for humanity, Franklin’s proclamation asserted, one too important to be detained by squabbles between nations. Franklin made his remarks in what he called a “passport” addressed to the captains and commanders of all American ships. In case Cook’s vessel should “happen to fall into your hands,” Franklin advised, “you should not consider her as an enemy, nor suffer any plunder to be made of the effects contained in her, nor obstruct her immediate return to England.” Americans, he said, should “treat the said Captain Cook and his people with all civility and kindness, affording them as common friends to mankind, all the assistance in your power which they may happen to stand in need of.”

The Spanish, who would soon be joining France in declaring war against England, were already well aware that Captain Cook was supposed to be somewhere in the Pacific, headed for the northwest coast of America—and they were highly displeased with England’s encroachments upon the region. They had informed officials in Mexico to keep a lookout for Cook and, if possible, to intercept and arrest him. Spanish shipwrights were constructing two new vessels—one in Mexico, another in Peru—for a voyage that aimed to halt and overtake Cook while reasserting Spanish claims in the Pacific Northwest.