Assertion: buttress | /r/CapableOf | become popular
Facets:
value: in the united states
type: LOCATION
Source sentences:
text: Buttress dams of slab concrete construction became popular in the United States in the early 20th Century with the patented process of Norwegian-American civil engineer Nils F. Ambursen.
text: Buttress dams of slab concrete construction became popular in the United States in the early 20th Century with the patented process of Norwegian-American civil engineer Nils F. Ambursen.