If desired, having one carrier would allow the maintenance of the mailbox rule (with, as discussed above, a reduction in competitive pressure), which in turn would be helpful in protecting the mail.
Having one carrier would be better protection for the mail.
Having one carrier would be make protection for the mail more difficult.
Asian tourists are eating lunch
young people creating things
The soccer player is sitting down taping his leg
Two people are at home.
He had two working hands.
Payment systems are just where they should be