The United States Secretary of State Hillary Clinton announced Thursday that the U.S. has eased sanctions against Myanmar and begun to allow its investors to do businesses in the country.

"Today we reviewed progress in Burma and I announced that the United States has eased its sanctions to allow American businesses to invest there," she said in a press briefing after the 19th ASEAN Regional Forum, which was attended by Foreign Ministers and Representatives from 27 countries and Secretary-General of ASEAN Surin Pitsuwan.

The eased sanctions were made after it was observed that the government of Myanmar has made progress in its democratization progress.

As scheduled, Hillary will meet Myanmar president Thein Sein on Friday afternoon in Cambodia's Siem Reap province, where they will attend the ASEAN-U.S. Business Forum.

The forum will also be participated by Cambodian Prime Minister Hun Sen and Thai Prime Minister Yingluck Shinawatra, according to the spokesman of the U.S. Department of State on Thursday.

Siem Reap, situated some 315 km northwest of Phnom Penh, is the country's largest cultural tourism destination. It houses the Angkor Wat Temples, one of the World Heritage Sites.