* 1955 – Mir Mine, the first diamond mine in the USSR, is discovered.

* 1955 – The USSR and Yugoslavia sign the Belgrade declaration and thus normalize relations between both countries, discontinued since 1948.

On 14 May 1955, the USSR established the Warsaw Pact in response to the integration of the Federal Republic of Germany into NATO in October 1954 – only nine years after the defeat of Nazi Germany ( 1933 – 45 ) that ended with the Soviet and Allied invasion of Germany in 1944 / 45 during World War II in Europe.

On 1 July 1991, in Prague, the Czechoslovak President Václav Havel formally ended the 1955 Warsaw Treaty Organization of Friendship, Cooperation, and Mutual Assistance and so disestablished the Warsaw Treaty after 36 years of military alliance with the USSR.

The USSR defeated the nationalist Hungarian Revolution of 1956, and the USA precipitated the US – Vietnam War ( 1965 – 1975 ) by participating in the Vietnamese Civil War ( 1955 – 1965 ) that the National Liberation Front fought against the Republic of Vietnam, the Asian client state of the United States.

* Stalinist architecture 1933 – 1955 USSR

' On 19 August 1955 " Statute on the State Flag of the Union of Soviet Socialist Republics " was adopted by a decision of the Presidium of the Supreme Soviet of the USSR.

This attitude was illustrated by his result in the 1955 USSR Championship: out of 19 games played, Petrosian was undefeated, but won only four games and drew the rest, with each of the draws lasting twenty moves or less.

In a game against Mark Taimanov during the 1955 USSR Chess Championship, Petrosian moved the same rook 6 times in a 24-move game, with 4 of those moves occurring on consecutive turns.

File: Flag_of_the_Soviet_Union_1923. svg | Flag of USSR from 12 November 1923-August 19, 1955.

From 1948 to 1965, he worked at the Institute for Physical Problems of the USSR Academy of Sciences, where he received his Ph. D. in 1951 for the theory of thermal diffusion in plasmas, and then his Doctor of Physical and Mathematical Sciences degree in 1955 for a thesis on quantum electrodynamics at high energies.

During May 1955 Gosplan was divided into two commissions: the USSR Council of Ministers State Commission for Advanced Planning (, USSR Gosplan ), and the USSR Council of Ministers Economic Commission on Current Planning ().

He was the founder and the director of Byurakan Observatory-one of the main astronomy centers of the USSR, the vice-president and then the president of Armenian Academy of Sciences, member of presidium of Academy of Sciences of the USSR, the vice-president ( 1948 – 1955 ) and the president ( 1961-1964 of the International Astronomical Union and twice was elected as the president of the International Council of Scientific Unions ( 1966 – 1972 ).

Meanwhile, in the USSR the Dahl ’ s Explanatory Dictionary was repeatedly ( 1935, 1955 ) reprinted in compliance with the old rules of spelling and alphabet.

This was inspired not only by the arms agreement between Egypt and the USSR in July 1955, but also by Egypt's nationalization of the Suez Canal the following year, resulting in an Anglo-French-Israeli attack on Egypt.

The rocket and space program of the USSR, initially boosted by the assistance of captured scientists from the advanced German rocket program, was performed mainly by Soviet engineers and scientists after 1955, and was based on some unique Soviet and Imperial Russian theoretical developments, many derived by Konstantin Eduardovich Tsiolkovskii, sometimes known as the father of theoretical astronautics .< ref >

He travelled to the USSR in 1955 and 1956, and witnessed first-hand the extent of the anti-Semitic campaign that had persecuted Jews in that country.

* Ambassador of France to the USSR ( 1952 – 1955 )

Kogan was made an Honoured Artist in 1955 and a People's Artist of the USSR in 1964.

In 1955, the USSR made an arms deal with Egypt.

In 1955 he appeared to the world in public at a press conference where he explained to the world the motivations of his choice to leave the West and work in the USSR.

* 1955 – The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective.

In the spring of 1955, after a long party in Las Vegas with Frank Sinatra, Judy Garland, her husband Sid Luft, Mike Romanoff and wife Gloria, David Niven, Angie Dickinson and others, Lauren Bacall surveyed the wreckage of the party and declared, " You look like a goddamn rat pack.

Over a year after Robson assumed the leadership, at a party meeting on 20 September 1955, senior party member Ken McCaw moved that the leadership be declared vacant, citing that Robson's leadership lacked the qualities necessary for winning the next election.

There are two threads in the history of finite simple groups – the discovery and construction of specific simple groups and families, which took place from the work of Galois in the 1820s to the construction of the Monster in 1981 ; and proof that this list was complete, which began in the 19th century, most significantly took place 1955 through 1983 ( when victory was initially declared ), but was only generally agreed to be finished in 2004., work on improving the proofs and understanding continues ; see for 19th century history of simple groups.

On 26 October 1955, Diệm declared himself the president of the newly proclaimed Republic of Vietnam.

In 1955, the Vietnamese Catholic leader Ngo Dinh Diem, encouraged by the United States, declared the creation of South Vietnam ( Republic of Vietnam ) in the southern part of Vietnam.

In 1955, Austria declared its Everlasting Neutrality and made neutrality a constitutional law.

Presley performed the song for the first time in Swifton, Arkansas on December 9, 1955, and declared to the audience that it would be his first hit.

The campaign lasted from December 1, 1955, when Rosa Parks, an African American woman, was arrested for refusing to surrender her seat to a white person, to December 20, 1956, when a federal ruling, Browder v. Gayle, took effect, and led to a United States Supreme Court decision that declared the Alabama and Montgomery laws requiring segregated buses to be unconstitutional.

The colony was declared an ' Overseas Province ' of the Portuguese Republic in 1955.

In response, the Ministers of Culture of the federal states in West Germany officially declared the Duden spellings to be binding as of November 1955.

To no one's surprise, the following day he declared Martial law, silencing the experiments in open politics that had begun in 1955, justifying his actions by arguing for a return to Thai traditions of social law and order.

In October 1955, Diệm deposed Bảo Đại in a fraudulent referendum organised by Nhu and declared himself President of the newly-proclaimed Republic of Vietnam ( South Vietnam ).

It was designated as the Province ’ s Capital by virtue of Philippine Legislative Act No. 2711 approved on March 10, 1917 until June 6, 1955, when Pili, the adjoining town was declared the Provincial Capital by virtue of Republic Act 1336 up to the present time

In 1955, Geoffrey Crowther, then editor of the UK publication The Economist, declared, " It is to the Radicals that The Economist still likes to think of itself as belonging.

Between 1949 and 1955, the U. S. maneuvered to have MSY declared the goal of international fisheries management ( Johnson 2007 ).

In 1955, the Alliance government together with the British High Commissioner declared an amnesty for the communist insurgents who surrendered.

The zone was dissolved in 1955, and Chubut was declared a province.

In response, the Ministers of Culture of the federal states in West Germany officially declared the Duden spellings to be binding as of November 1955.

With the arrival of the improved M48 Patton in 1953, the M47 was declared limited standard in 1955, and examples in tank units were replaced with the M48 series soon after.

No. 399 Signals Unit arrived in January 1955 and declared itself fully operational on 15 February, located in No. 2 hangar ( now the station gymnasium ).

The troops remained until 1955 when Austria officially declared neutrality.

Marcellin Champagnat was declared Venerable in 1920 by Pope Benedict XV beatified by Pope Pius XII on 29 May 1955, and canonised by Pope John Paul II on April 18, 1999.

It was declared a specialist language school in 1955 and was the first state school to achieve this.