What is Henri Rousseau known for?

He was also known as Le Douanier (the customs officer), a humorous description of his occupation as a toll and tax collector.
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Como é que Rousseau inspirou a Revolução Francesa? Jean-Jacques Rousseau ajudou a redigir a Declaração de Independência? What was Henri Matisse’s most famous piece of art? When did Henri Matisse paint the cat with red fish? What year was the cat with red fish painted? How much does it cost to get a painting authenticated? What did Henri Rousseau die of? How much did Vincent Van Gogh sell the Red Vineyard for? ¿Cuándo pintó Henri Matisse el gato con peces rojos? Quando é que Henri Matisse pintou o gato com peixe vermelho?