Explain how a civil action is commenced

Question

Assignment:

Questions:

1. Explain how a civil action is commenced.
2. Where may process be served under the federal rules? Please list ALL the ways with which service can be processed.
3. When and how may a defendant bring in a third party under the federal rules?
4. In computing time under the federal rules, how many days may be added for documents served by mail?
5. Please specify the proper form for a subpoena under the federal rules.