Japan Marks 150th Year Of U.S.-Japan relations.

YOKOHAMA, JAPAN - APRIL 3: Japan's Prime Minister Junichiro Koizumi (L), U.S. Ambassador to Japan Howard H. Baker (R) and Japanese Environment Minister Yuriko Koike (C) plant a tree during a ceremony to commemorate the 150th year of U.S.-Japan relations April 3, 2004 in Yokohama, Japan. The ceremony was organized by U.S.-Japan 150 Years Committee and supported by the Ministry of Foreign Affairs and the City of Yokohama. (Photo by Koichi Kamoshida/Getty Images)