Conversation so far:
Are there any interesting aspects about Le Corbusier with Painting, Cubism, Purism and L'Esprit Nouveau?
Le Corbusier moved to Paris definitively in 1917 and began his own architectural practice with his cousin, Pierre Jeanneret, a partnership that would last until the 1950s.

Question: What took place in 1918?
Self-contained rewrite: What took place in 1918 with Le Corbusier?