Q1: Why are Canada and Britain listed in the infobox? Wasn't the Manhattan Project an all-American effort?
A1: No, the Manhattan Project was a multinational effort, controlled by the United States, Britain and Canada.
Q2: Weren't other countries involved? Why aren't they listed too?
A2: Other countries were involved. There were many individuals from many countries. Especially notable contributions were made by Niels Bohr (Denmark) and Marcus Oliphant (Australia). The flags in the infobox refer to the governance of the project, which was by the United States, Britain and Canada.
Q3: Is it worth noting that Canada had such a role?
A3: Yes. This had important consequences in the post-war period.
A10: This refers to the activities of Project Alberta. Manhattan Project personnel, including Captain William S. Parsons were on board the aircraft which carried out the missions.
Q11: I added something to the article but it got removed. Why?
A11: In all probability what you added was trivia, unsourced information or information cited to an unreliable source; such information is usually removed quickly because of the article's Featured Status. Articles on Wikipedia require reliable sources for an independent verification of the facts presented, consequently any information added to an article without a reliable source is subject to removal from the article at any Wikipedian's discretion.
Q12: I tried to edit this article but couldn't. Why?
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This article was the subject of a Wiki Education Foundation-supported course assignment, between 21 January 2020 and 8 May 2020. Further details are available on the course page. Student editor(s): AJMARI.
'Part of the Quebec Agreement specified that nuclear weapons would not be used against another country without mutual consent.' The 'mutual consent' in question was presumably the agreemnt among the bombers not between the bombers and the (to be) bombed (Pamour (talk) 16:08, 23 August 2020 (UTC)).
I think it is clear from the context that the mutual consent referred to is between the US and UK, but added words to that effect. This became controversial in the post-war period when Congress discovered that the UK had a veto over the use of nuclear weapons. Hawkeye7(discuss) 20:59, 23 August 2020 (UTC)
Seeing this article from the perspective of someone that did not knew the fact that it is code-named something along the lines of "project Manhattan District", that seemed like an odd and inappropriate name to put over the picture of the trinity bomb fireball. Now that I know it, it does not seem too good and obvious to me either. Wouldn't it be more appropriate for the title to read:
The infobox refers to the Manhattan District, which was the official name of the military unit; the Manhattan Project was the name of the project. See the article for details. Hawkeye7(discuss) 19:24, 29 September 2020 (UTC)
Semi-protected edit request on 12 October 2020Edit
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The Canadian flag represented is wrong it a maple leaf with red border and white center. 22.214.171.124 (talk) 17:12, 12 October 2020 (UTC)
The Canadian flag was correct. It was the flag at the time. The maple leaf flag was not adopted until 1965. See MOS:FLAGS: Use historical flags in contexts where the difference matters. Hawkeye7(discuss) 19:20, 12 October 2020 (UTC)
Thanks for catching that Hawkeye7. Netherzone (talk) 19:23, 12 October 2020 (UTC)
Under the Constitution of the United States, only Congress gets to declare war. Other countries can declare war on the US all they like, but only a law passed by Congress makes it official. Hawkeye7(discuss) 21:51, 16 October 2020 (UTC)