Stem from
Definition 1 of 1
Pro Tip 1/3Contextual Usage
Use 'stem from' to explain the root cause of situations or emotions. 
His fear of water stems from a childhood incident at the pool.
Pro Tip 2/3Not Physical Objects
'Stem from' is not used for physical objects; it's for abstract concepts or events. 
Her interest in biology stems from her passion for wildlife.
Pro Tip 3/3Underlying Link
Indicate an underlying link between two things, one being the result of the other. 
The community's strength stems from a long history of mutual support.