Country in which you must lead people (5)
I believe the answer is:
yemen
'country' is the definition.
(Yemen is an example)
'you must lead people' is the wordplay.
'you' becomes 'ye' (historical version of 'you').
'must lead' is a charade indicator (letters next to each other) (some letters must go in front of others).
'people' becomes 'men' (men are people).
'ye'+'men'='YEMEN'
'in which' is the link.
(Other definitions for yemen that I've seen before include "Country between the Red Sea and the Gulf of Aden" , "Enemy (anag) - country of Arabia" , "Saudi neighbour" , "Middle East country" , "Country to south of Saudi Arabia" .)