The Dutch were the only Europeans allowed to trade with Japan as long they?

The Dutch were allowed to trade with Japan because they agreed not to bring any missionaries into the country and to perform an annual ritual of submission to the shogun. This ritual, known as the "trampling ceremony", involved the Dutch representatives prostrating themselves before the shogun and stepping on an image of Jesus. The Dutch also had to pay an annual tribute to the shogunate and were only allowed to trade through the port of Nagasaki.