It was the Canadian government which took in Queen Juliana, the Dutch royalty who had fled her country when the Nazis occupied it in 1940. She came to Canada with her husband and two daughters. In 1943, she gave birth to a third child at an Ottawa hospital. The hospital was declared an international zone in order that Queen Juliana's baby could be of Dutch citizenry and therefore eligible for the crown.
Princess Juliana and Prince Bernhard with two daughters in Ottawa circa 1942 courtesy https://en.wikipedia.org/wiki/Juliana_of_the_Netherlands.
After the Second World War, the Dutch government sent 100,000 tulip bulbs to Canada, the origin of Ottawa's Tulip Festival. The tradition has continued ever since.