@WBYeats,
WBYeats wrote:
Thank you Contrex~
But InfraBlue said 'southwest US'(no THE); I meant to say, is THE still not omitable in an incomplete sentence like 'UK/US'?
1. 'Omitable' is not a word.
2. You will see that I answered for the UK specifically. I am not a native of the US, and therefore decline to comment directly.
3. However, people often omit things like articles, punctuation, etc, in informal writing (e.g. terse notes like the one InfraBlue wrote) which are required in more formal productions.