The most common and most likely answer to this crossword clue is the 10 letter word GLOBALISES
I've seen this crossword clue in Financial Times
G
L
O
B
A
L
I
S
E
S
Buddy explains!
The straight part
We know that "extends around the world" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extends around the world = globalises.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GLOBALISES mean?
GLOBALISES verb- To make something global in scope