tariff - n. a tax on goods coming into or leaving a country

doubtful - adj. uncertain or unsure about something

screen - n. the part of a television or computer that you look at when you are using it

transforming - v. to change (something) completely and usually in a good way

digital - adj. using or characterized by computer technology

subsidy - n. money that is paid usually by a government to keep the price of a product or service low or to help a business or organization to continue to function

customer - n. someone who buys goods or services from a business

contradict - v. to say the opposite of (something that someone else has said)

summit - n. a meeting or series of meetings between the leaders of two or more governments