* 1974 – The Super Outbreak occurs, the second biggest tornado outbreak in recorded history ( after the April 25-28, 2011 tornado outbreak ).

** Ai Weiwei ( born 1957 ), Chinese artist, curator, architectural designer, cultural and social commentator, dissident, disappeared April 2011

On April 28, 2011 Georgia Governor Nathan Deal signed legislation allowing local communities to vote on whether to allow alcohol sales on Sundays.

After the second terminal of International Airport Sofia was built the total number of passengers rose and reached 3 230 696 in 2008, and in April 2011 Airport Sofia serviced 282 694 passengers, 13 % more than the same period of 2009, when the record was 250 000 passengers.

| 18 April 2011

On April 18, 2011, it was reported that a military mutiny in Burkina Faso had spread to a fourth city, Kaya, after demonstrations in Po and Tenkodogo.

On 22 April 2011, French culture minister Frédéric Mitterrand officially inscribed bullfighting on a list enumerating the country's cultural heritage, a decision which Bardot is currently publicly contesting.

In April 2011, a representative for Andrews McMeel received a package from a " William Watterson in Cleveland Heights, Ohio ", which contained a 6 " x 8 " oil-on-board painting of Cul De Sac character Petey Otterloop, done by Watterson for the Team Cul de Sac fundraising project for Parkinson's Disease.

The movie was first aired on April 17, 2011.

On 15 April 2011, a day before his 122nd birthday anniversary, Google celebrated him with a special Google Doodle video on its global and other country-wide homepages.

The latest census in Croatia was performed in April 2011.

In April 2011, Chaosium and new developer Red Wasp Design announced a joint project to produce a mobile video game based on the Call of Cthulhu RPG entitled Call of Cthulhu: The Wasted Land.

On April 12, 2011, she played live through video link for the audience of Jethro Tull's show in Russia in honour of the 50th anniversary of Yuri Gagarin's flight.

In April 2011, Limehouse Library having closed in 2003, the Attlee statue was unveiled in its new home at Queen Mary University of London.

In November 2011, Charles took time off from Coronation Street to film a new series of Red Dwarf, returning to filming on ' Corrie ' in April 2012.

In April 2011 the Columbia University Senate voted to welcome the ROTC program back on campus.

* On 3 April 2011, Fulham unveiled a statue of Michael Jackson inside the stadium before its match with Blackpool.

This started in April and would develop during the year and into early 2011.

The last census was taken in 2011 ( from April 1 to April 28 ).

But due to some internal problems, the census was delayed till start of 2011 and its first phase was started in April allover the country.

The 2011 Cricket World Cup was co-hosted by Bangladesh, India, and Sri Lanka from 19 February to 2 April 2011.

According to the project's Facebook group, the English-language DVD has been released in Denmark on April 16, 2011 and is available internationally through the website forlaget-afart. dk /.

The book was originally made as a gift by papersera. net for Rosa himself upon the occasion of Rosa's April 2011 visit to Turin, Italy, and is available as a print-on-demand book from Lulu. com ( see link at papersera. net site on the book )

On 23 April 2012, Nestlé agreed to acquire Pfizer Inc .' s infant-nutrition unit for $ 11. 9 billion.

Pfizer resumed advertising Celebrex in magazines in 2006, and resumed television advertising in April 2007 with an unorthodox ,-minute advertisement which extensively discussed the adverse effects of Celebrex in comparison with other anti-inflammatory drugs.

On April 7, 2005, Pfizer withdrew Bextra from the U. S. market on recommendation by the FDA, citing an increased risk of heart attack and stroke and also the risk of a serious, sometimes fatal, skin reaction.

* 11 April – Pfizer Inc., a pharmaceutical company, agrees to supply AIDS patients attending public hospitals with an unlimited two-year supply of Fluconazole

Pfizer released a new version of Rolaids on April 6, 2006, branded Extra Strength Rolaids Plus Gas Relief Softchews.

Rome was founded on the ninth day of the month Pharmuthi, which was 21 April, as universally agreed.

In April 2001 manufacturers agreed to reduce lead content to 1. 5 %, or face a requirement to warn consumers about lead content.

Territorial changes as a result of the First Balkan war, as of April 1913 showing the prewar agreed line of expansion between Serbia and Bulgaria

On 1 April 1911, Porfirio Díaz claimed that he had heard the voice of the people of Mexico, replaced his cabinet, and agreed to restitution of the lands of the dispossessed.

In April 2006, Scottish & Newcastle plc announced that it had agreed to acquire the Foster ’ s brand in Europe ( including Turkey ), the Russian Federation and other countries in the Commonwealth of Independent States from Foster ’ s Group Limited for approximately £ 309 million.

However, in its April 2009 progress report, the OECD listed Gibraltar in the list of jurisdictions which, although committed, had not " substantially implemented " yet the internationally agreed tax standard.

A cease-fire was agreed upon between Israel and Hezbollah, which would be effective on April 27, 1996.

The Americans thought that Napoleon might withdraw the offer at any time, preventing the United States from acquiring New Orleans, so they agreed and signed the Louisiana Purchase Treaty on April 30, 1803.

During the MySQL Users Conference in April 2006, MySQL issued a press release that confirmed that MySQL and Innobase OY agreed to a " multi-year " extension of their licensing agreement.

On 6 April Poland and the UK agreed to formalize the guarantee as a military alliance, pending negotiations.

* 12 April 2007 According to Engineering News, a South Korean consortium has agreed to build a new 800 km railway in the Congo-Brazzaville Republic in return for timber concessions.

On the conclusion of talks in London, Britain agreed to grant Sierra Leone Independence on the 27 of April 1961. however, the outspoken trade unionist Siaka Stevens was the only delegate who refused to sign Sierra Leone's declaration of Independendence on the grounds that there had been a secret defence pact between Sierra Leone and Britain ; another point of contention by Stevens was the Sierra Leonean government's position that there would be no elections held before independence which would effectively shut him out of Sierra Leone's political process.

On 18 April 1695, Clarke met with representatives of the Lords, and they agreed to allow the Continuation Bill to pass without the renewal of the Licensing Act.

On Sunday, April 1, 2007, Major League Baseball's 2007 Opening Night, the Padres announced that they had agreed to terms on a four-year contract with 1B Adrian Gonzalez, keeping him in San Diego until 2010 with a club option for 2011.

In response, Faure Gnassingbé agreed to hold elections and on 25 February, Gnassingbé resigned as president, but soon afterward accepted the nomination to run for the office in April.

In response, Gnassingbé agreed to hold elections in April 2005.

In the Treaty of Rapallo, concluded in April 1922, Germany accepted the Treaty's nullification, and the two powers agreed to abandon all war-related territorial and financial claims against each other.

In late April, Red Sox owner Tom Yawkey and Yankees owner Dan Topping agreed to swap the players, but a day later canceled the deal when Yawkey requested that Yogi Berra come with DiMaggio.

Although Zhou's ideas have not yet been broadly accepted, leaders meeting in April at the 2009 G-20 London summit agreed to allow $ 250 billion of special drawing rights to be created by the IMF, to be distributed globally.

Powell received almost 120, 000 ( predominantly positive ) letters and a Gallup poll at the end of April showed that 74 per cent of those asked agreed with his speech and only 15 per cent disagreed, 11 per cent unsure.

Although the proposed years varied, all versions agreed that the city was founded on April 21, the day of the festival sacred to Pales, goddess of shepherds ; in her honour, Rome celebrated the Par ilia ( or Palilia ).

Rome was founded on the ninth day of the month Pharmuthi, which was April 21, as universally agreed.

The new so-called Convention Parliament assembled on 25 April 1660, and soon afterwards received news of the Declaration of Breda, in which Charles agreed, amongst other things, to pardon many of his father's enemies.

Confusion over this issue lasted until April 26, 1865, when Johnston, ignoring instructions from President Davis, agreed to purely military terms and formally surrendered his army and all the Confederate forces in the Carolinas, Georgia, and Florida, in what was the largest single capitulation of the war.

After a successful visit to Northern Ireland in July 1924, the Labour government agreed that Albert and Elizabeth could tour East Africa from December 1924 to April 1925.