The Open Door Notes (1899–1900) sought to
- A
Mediate the Boer War in South Africa
- Bcheck_circle
Preserve equal trade access for all powers in China and protect Chinese territorial integrity
- C
Annex the Philippines as US territory
- D
Open Japan to American whalers in the 19th century
Explanation
Hay's notes asked European powers + Japan to keep Chinese spheres-of-influence open to American commerce and not partition China — a US economic strategy as the late entrant.