The days we could not undo

Supports The June assassination, German backing for Austria-Hungary, war on Serbia on 28 July and August escalation.

Source relationship Andreas Mix synthesises diplomatic decisions rather than an inevitable alliance mechanism.

Supports Assassination of Franz Ferdinand and Sophie on 28 June, Austria-Hungary’s declaration on 28 July and August entries into war.

Source relationship Separate museum chronology checks dates but still draws on the common event record, not two eyewitnesses.

Supports The two revolutions, seizure of power on 7 November Gregorian, subsequent civil war and one-party rule.

Source relationship The European Parliament museum’s retrospective must be separated into the event and later developments.

Supports Old Style 25 October and Gregorian 7 November, and Lenin/Soviet imagery in a 1977 commemorative calendar.

Source relationship Cataloguing and the 1977 object establish commemoration, not independent eyewitness evidence from 1917.

Supports Estimated large mortality, lack of relevant vaccines and antibiotics at the time, and nonpharmaceutical measures.

Source relationship CDC’s overview shares mortality estimates and historical evidence with research, not a separate census.

Supports Multiple 1918–1919 waves, uncertain historical mortality, and insufficient evidence for geographic origin.

Source relationship Named scholarly synthesis compares historical and viral evidence; the CDC overview is not independent mortality evidence.

Supports The October 1929 crash, leverage, policy disputes and transmission through confidence and spending.

Source relationship Named authors synthesise financial history, sharing economic scholarship with Bernanke’s lecture.

Supports A retrospective on US output, unemployment, deflation, banking crisis and debated causes in 1929–1933.

Source relationship The speaker states personal scholarly views, using existing studies and historical statistics rather than new independent data.

Supports Germany’s invasion on 1 September, the Soviet invasion on 17 September, the campaign and occupation partition.

Source relationship This campaign history and the museum’s timeline share research rather than independent evidence.

Supports Invasion on 1 September, British and French declarations on 3 September, refugees and racial persecution under German occupation.

Source relationship A second presentation adds civilian and persecution context, not a second independent research base.

Supports Death marches from 17 January, destruction of killing facilities on 21–26 January, and Soviet liberation on the 27th with roughly 7,000 survivors.

Source relationship The site museum’s chronology shares camp records with other research; individual originals were not separately examined.

Supports Liberation on 27 January 1945, death marches, remaining material evidence and survivors’ long recovery.

Source relationship A second museum synthesises several camps, potentially sharing Auschwitz records; it is not a second survivor census.

Supports 6 August 1945 at 8:15, heat/blast/radiation harm and uncertainty in end-of-year death estimates.

Source relationship The city’s history differs from ICRC relief records, but they do not provide independent mortality statistics.

Supports Bilfinger’s 30 August report of destroyed hospitals, Junod’s September relief, shortages and delayed harm.

Source relationship The archival article uses a telegram and relief memoirs distinct from city commemoration; recollections and contemporary reports are separated.

Supports The fifty-state San Francisco conference, adoption on 25 June, signing on 26 June and entry into force on 24 October.

Source relationship UN legal history draws on conference and ratification records shared with the charter itself.

Supports The preamble, sovereign equality, peaceful dispute settlement, principal organs and Security Council permanent-member voting conditions.

Source relationship The original legal text establishes institutional design, not independent evidence of later performance.

Supports Founding and the Tiananmen ceremony on 1 October 1949, and the National Day resolution on 2 December.

Source relationship PRC governmental commemoration establishes the official date, not neutral adjudication of every historical dispute.

Supports Mao’s declaration on 1 October, civil-war background, Nationalist retreat to Taiwan and divided diplomatic recognition.

Source relationship US diplomatic history supplies a different perspective; dates can be cross-checked without adopting its political vocabulary.

Supports Opening on 9 November 1989, peaceful revolution, Eastern European context and varied eyewitness perspectives.

Source relationship Foundation synthesis draws on testimony and context potentially shared with city histories, not a wholly independent dataset.

Supports The 9 November travel announcement, media and crowds, checkpoint opening and major demolition in 1990.

Source relationship City synthesis overlaps with the foundation’s historical evidence, primarily adding chronology.

Supports The original press-conference notes, 9 November 1989 provenance, 2015 authentication and the gap between announcement and planned implementation.

Source relationship The original and handwriting/material authentication supply distinct evidence, not proof of every checkpoint experience.