Iroquois and Sioux leaders call out for insurrection (6)
I believe the answer is:
rising
'for insurrection' is the definition.
(synonyms)
'iroquois and sioux leaders call out' is the wordplay.
'iroquois' becomes 'i' (this might be a standard abbreviation of which I'm unaware).
'and' is a charade indicator (letters next to each other).
'leaders' says to take the initial letters.
'call' becomes 'ring' (telephone call).
'out' indicates putting letters inside.
The initial letter of 'sioux' is 's'.
'i'+'s'='is'
'is' inserted into 'ring' is 'RISING'.
Can you help me to learn more?
(Other definitions for rising that I've seen before include "working one's way up" , "Upwardly mobile" , "Upward rebellion?" , "Moving upwards" , "Hill" .)