Expand one's horizons (6,3)
I believe the answer is:
branch out
(Other definitions for branch out that I've seen before include "Extend activities in new direction" , "diversify" , "Take up new things" , "Expand" .)
I believe the answer is:
branch out
(Other definitions for branch out that I've seen before include "Extend activities in new direction" , "diversify" , "Take up new things" , "Expand" .)