شکاف سنی ازدواج، مهاجرت داخلی و جمعیت تبعیدی پس از انقلاب (1956-1991)_

رویدادها

1. 01۱۹۶۲تصویب مرحله نخست قانون اصلاحات ارضیقوت ارتباط

   دولت نخست‌وزیر علی امینی، از طریق وزیر کشاورزی حسن ارسنجانی، قانون اصلاحات ارضی را تصویب کرد که مالکیت فردی زمین را به یک روستا محدود و فروش زمین‌های مازاد به کشاورزان مستأجر با قیمت‌های کنترل‌شده را الزامی می‌کرد؛ این اقدام آغازین بعدها در برنامه انقلاب سفید گنجانده شد.

   چرایی این پیوند: The share of Iranians still residing in their shahrestan (county) of birth fell from 89% (1956, a pre-land-reform baseline) to 77.6% (1986), consistent with the rural-to-urban migration wave associated with the White Revolution's land reform (which left many smallholding tenant farmers without secure land tenure even as it nominally redistributed land) combined with oil-boom-era urban industrial job growth pulling labor toward Tehran and other cities.

   ملاحظه: This 30-year span bridges land reform, the entire 1960s-70s oil-boom industrialization era, AND the 1979 revolution/Iran-Iraq War -- several large, independently migration-inducing events sit inside this one window (the White Revolution referendum itself, 1963-01-26, is arguably as good or better an anchor than the Jan 1962 first-stage law). Attributing this multi-decade trend to land reform specifically, rather than industrialization broadly or war-driven displacement in the window's final years, is a soft, gradual-context call, not a sharp inflection-point match.

   تأخیر اثر: gradual over 2+ decadesمنبع: The Cambridge History of Iran - Land Reform in Iran
2. 02۱۹۷۹انقلاب اسلامیقوت ارتباط

   حکومت محمدرضا شاه سقوط کرد و جمهوری اسلامی در اول فروردین 1358 (1 آوریل 1979) به رهبری آیت‌الله خمینی اعلام شد.

   چرایی این پیوند: The chart's own sourced figure of roughly 3 million Iranians who went into exile (US, Europe, India and Turkey combined) is explicitly attributed by its own citation (Bozorgmehr and Sabbagh) to 'the 1978-79 revolution + Iran-Iraq war era' -- one of the most extensively documented mass-emigration episodes in modern Iranian history, spanning the immediate 1979 flight of the Pahlavi elite/royalists and religious/ethnic minorities (Baha'i, Jewish, Armenian communities disproportionately represented) through 1980s draft-age emigration to avoid Iran-Iraq War conscription.

   ملاحظه: The ~3 million figure is a single aggregate estimate spanning BOTH the revolution AND the 8-year war combined, not annually dated -- it cannot be decomposed into 'how much was 1979 alone vs. how much accrued during the war' with this data alone. Confidence reflects a well-documented aggregate link, not a precisely time-resolved one; the Iran-Iraq War begins event (1980-09-22) is a genuine co-cause, not ruled out.

   تأخیر اثر: immediate, continuing through the 1980s war yearsمنبع: Encyclopaedia Britannica