Misc: In country does nodding the head means "no" & shaking the head means "yes"?

Questions

Hand tool for gripping nuts or bolt heads?

On This Day In January 1953 - U.S. ______ Harry Truman announced the development of the hydrogen bomb.?

On This Day In January 1954 - The Duoscopic TV receiver was unveiled this day. The ______ set allowed the watching of two different shows at the same time.?

On This Day In January 1959 - The United States recognized ______ Castro's new government in Cuba.?

On This Day In January 1968 - The cost of a U.S. first class ______ was raised to 6 cents.?