Minimum contacts. Minimum contacts is a term used in the United States law of civil procedure to determine when it is appropriate for a court in one state to assert personal jurisdiction over a defendant from another state.
Under ideal conditions, oak trees live an average of 150 years, with short-lived varieties lasting 50 to 60 years and long-lived varieties living more than 150 years.
Birch trees live between 30-40 years, My favorite is the silver birch tree. Birch trees are not, in the long lived tree range. as are oak or giant redwoods etc , which may live for many hundreds of years, given ideal conditions.