The power of any member of congress to sign or have a printer produce his or her signature on any piece of mail and have it delivered, without cost to the member.

Franking Privilege.

Explanation:

The Franking Privilege, as the exercise details, refers to the privilege of certain government officials to send mail without payment or postage. Both personal and official designations are included in this privilege, for all members of Congress. The right to send mail to their constituents is called the Franking Privilege.

what organizations did you select

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.