"I didn't imagine for a moment that you were my dear, but having not been born and raised on Earth I imagine it's rather daunting to be presented with all it's history and sometimes quirky ways" he said, "I'm no expert in History, or not American History anyway but perhaps I could help?" It was true that he'd been more England focused but it wasn't like Aziraphale was ignorant of what had been happening in America, he knew the basics anyway.
"Ah yes, well I'm an Angel, a celestial being if you will" he smiled, "I've been around since the beginning" Or one of them anyway since it seemed not everybody had exactly the same version of Earth which in itself was fascinating.