The flooding caused by their dams, she suggests, created soils that were extremely marshy and nutrient-rich.
(The flooding; caused; by their dams) (she; suggests; created soils) (The flooding caused by their dams; created; soils that were extremely marshy and nutrient-rich) (soils; were; extremely marshy and nutrient-rich)
The flooding she The flooding caused by their dams soils
caused suggests created were
by their dams
created soils
soils that were extremely marshy and nutrient-rich
extremely marshy and nutrient-rich