Despite the great reforms of Jean-Georges Noverre in the eighteenth century, ballet went into decline in France after 1830, though it was continued in Denmark, Italy, and Russia. It was reintroduced to western Europe on the eve of the First World War by a Russian company, the Ballets Russes of Sergei Diaghilev, who ultimately influenced ballet around the world. Diaghilevs company became a destination for many of the Russian-trained dancers fleeing the famine and unrest that followed the Bolshevik revolution. These dancers brought back to their place of origin many of the choreographic and stylistic innovations that had been flourishing under the czars.
In the 20th century, ballet had a strong influence on broader concert dance. For example, in the United States, choreographer George Balanchine developed what is now known as neoclassical ballet. Subsequent developments include contemporary ballet and post-structural ballet, seen in the work of William Forsythe in Germany. Also in the twentieth century, ballet took a turn dividing it[clarification needed] from classical ballet to the introduction of modern dance, leading to modernist movements[clarification needed] in both the United States and Germany.