What is the capital of Guam?

What is the capital of Nauru? What is the capital of New Caledonia? What is the capital of French Polynesia? What is the capital of the Northern Mariana Islands? Which city is the capital of the Federated States of Micronesia? Which city is the capital of Wallis and Futuna? What is the capital of the Pitcairn Islands? What is the capital of American Samoa?