American businesses have begun to explore how they can sell their goods and services in Iran.For many years, restrictions on trade have stopped many companies from doing business in the country.The United States government was a major supporter of economic sanctions against Iran.The sanctions were meant to punish Iran for ignoring United Nations resolutions on its nuclear activities.But those restrictions may soon change. This month, Iran signed an agreement with world powers to limit its nuclear program.The deal calls for the international community to lift the sanctions.The agreement sets limits on Iran's nuclear development for 10 years. In exchange, the international community will end sanctions and trade limits, which have hurt Iran's economy.But experts say Iran has much to do before foreign businesses invest in the country and sell their products there.Suzanne Dimaggio is director of the Iran Initiative at New America, a public policy group.She says the country has 80 million highly-educated consumers who want to buy products and services from U.S. companies.