Misc: what is the element for the symbol Pm?

Questions

On This Day In January 1959 - Fidel ______ overthrew the government of Fulgencio Batista, and seized power in Cuba.?

On This Day In January 1968 - Evel Knievel, stunt performing______ , lost control of his motorcycle midway through a jump of 141 feet over the ornamental fountains in front of Caesar?

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.?