UM meaning in Regional ?

Answer:

What is USA Minor Outlying Islands mean?

United States Minor Outlying Islands is a statistical designation defined by the International Organization for Standardization's ISO 3166-1 code. The entry code is ISO 3166-2:UM. The minor outlying islands and groups of islands consist of eight United States insular areas in the Pacific Ocean (Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll, and Wake Island) and one in the Caribbean Sea (Navassa Island).

reference

Full Form	Category
University of Maryland	Academic & Science
University of Maine	Academic & Science
Uncertainty of Measurement	Academic & Science
Micro Meter	Academic & Science
University of Minho	Academic & Science
University of Miami, Florida	Academic & Science
Utilization Management	Business
Utah Medical Products, Inc.	Business
The Ultra Mirage	Business
Universal Mediterranea	Business
Universal Mgf	Business
Union Meeting	Business
User Model	Chemistry
Untitled Music	Community
Universal Music	Community
Universal Message	Community
Ubiquitous Museum	Community
United Methodist	Community
Unsolved Mysteries	Community
Radio (Air) Interface between Mobile and Base Station	Computer and Networking
User Mode	Computer Assembly Language
User Management	Computing
Universal Machine	Computing
United States Minor Outlying Islands	Country Names
Continuum World	Cryptocurrency
Unit of Measure	Electronics
User Modeling	General
Unexplored Mansion	General
Unaccompanied Minor	General
Under Mount	General
Users and Makers	General
Ultra Mobile	General
Uveal melanoma	General
Under Mouth	General
User Maker	General
Upper Marlboro	General
Unintentional Modulation	General
Ultimate Muscle	General
Undead Master	General
Unique Manuka	General
Unfocused Moment	General
Unearthed Madness	General
University Of Morons	General
Ukrainian Models	General
Uplink Message	General
U Momma	General
Utah Man	General
Ukraine Mediterranean	General
Ultimate Member	General
US Minor Outlying Islands	General
Unattended Minor	General
Unacompanied Minor	General
Uninsured Motorist	Governmental
Unsolicited Message	Governmental
UMARDASHI	Indian Railway Station
Unión Mallorquina	International
Upper Management	Jobs
Urogenital Membrane	Medical
Unvoiced Mutation	Medical
Under Medication	Medical
Up Mine	Messaging
User Manual	Military and Defence
Unit Manager	Military and Defence
Unified Messaging	Networking
USA Minor Outlying Islands	Regional
Utter Madness	Sports
Ultra Maniac	Sports
Undefeated Masters	Sports