Colonist preceded by young attendant in historical show (7)
I believe the answer is:
pageant
'historical show' is the definition.
'pageant' can be an answer for 'show' (a show or display). I am not sure about the 'historical' bit.
'colonist preceded by young attendant' is the wordplay.
'colonist' becomes 'ant' (ants live in colonies).
'preceded by' means one lot of letters go next to another.
'young attendant' becomes 'page' (eg a royal page).
'ant' after 'page' is 'PAGEANT'.
'in' is the link.
Can you help me to learn more?
(Other definitions for pageant that I've seen before include "Rich parade" , "Magnificent parade" , "Tableaux or dramatic scenes depicting historical events" , "Costumed procession" , "Splendid procession, parade" .)