Approachable. Down to earth. Well-liked, even by those who should be his enemies. He is also no stranger to hostile environments, having butted heads with an angry Russian government while running the TNK-BP joint venture. And, crucially, BP's incoming CEO Bob Dudley is American.
Anyone looking for evidence of the change represented by the United States electing an African-American as president could start with the White House itself. It was built 200 years ago using black slave labor.