U.S. officials were seeking to contact hundreds of Americans who remain unaccounted for in the region, and European countries set up hotlines for family members and sent diplomats to aid stranded countrymen.The United States dispatched disaster teams and prepared a US$15 million (euro11 million) aid package to the Asian countries, and the 25-nation European Union promised to quickly deliver euro3 million (US$4 million). Japan, China and Russia were sending teams of experts. - AP