I would say 30,000 cause all the next developments were from the 1860's forward and that is when huge growth happened, after 1860.
Lyndon B Johnson became one of the most actively involved president in Vietnamese combat after Kennedy was assassinated
Answer: : The Battle of Britain is important because it was one of the pivotal points of the war, much like Stalingrad or Midway, it effectively halted Hitlers advance in the west and denied Hitler
Explanation: