Iroquois was the civilization that formed a confederation that may have impacted the US government
The tenth dynasty ruled the south during the middle kingdom
I'm not sure what you mean by "historically", but there are many key features of London:
Big Ben
Buckingham Palace
the Thames River
London Bridge
London Eye
Trafalgar Square
Hyde Park
Westminster Abbey
the Globe Theater
In their 1943 meeting at Casa Blanca, Allied leader decided to invade Italy.
Your answer is Enslaved Africans.
Hope I helped;)