Discovered method for long-term storage of blood plasma. secondly he organized America's First large-scale Blood Bank
Answer: the end of the Russian revolution
Explanation:
when the Russian revolution ended, the citizens killed their primer leader, and all of his family. After that, their new leader brought communism to Russia.
Courts of Appeals
The 94 federal judicial districts are organized into 12 regional circuits, each of which has a court of appeals. The appellate court's task is to determine whether or not the law was applied correctly in the trial court. Appeals courts consist of three judges and do not use a jury.