Acronym Soup: PMJI?

Questions

On This Day In January 1971 - ______ ads representing $20 million dollars in advertising were banned from TV and radio broadcast.?

On This Day In January 1973 - Britain, Ireland, ______ and Norway joined the EEC.?

On This Day In January 1979 - The United States and ______ held celebrations in Washington, DC, and Beijing to mark the establishment of diplomatic relations between the two countries.?

On This Day In January 1981 - Greece joined the ______ Community.?

On This Day In January 1984 - AT&T was broken up into ______ Bell System companies under terms of an antitrust agreement.?