First of all, I want to say hello to other members of this forum! This is my first posting here and "the switch" for it was dilemma in which I found myself while I was thinking about proper use of the definite article "the"! And I know that (is) by the grammar rule, definite article "the" shouldn't be used before the names of cities, countries, lakes and so on, but that's contradictory in some cases such as few sentence examples below:
"Exploring the United Kingdom of Great Britain and Northern Ireland, and the Republic of Ireland with the light aircraft Cessna Skyhawk SP Model 172".
"Exploring the Canada with the light aircraft Maule M-7-260C Orion".
"Exploring the Caribbean region with the seaplane de Havilland DHC–2 Beaver".
So, I'm wondering whether those sentence examples are just exceptions from the grammar rule or not!? And I'd like to hear other opinions on this topic because articles (in this case definite) are present in many sentences.