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Case file

Islam in Africa

Wikipedia's first sentence called it “largest religion in africa”. Today it says “second most professed faith behind christianity”. Sections present on October 6, 2023 no longer exist: “Nondenominational Muslims”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the October 6, 2023 one. Red dashes: removed from Wikipedia since. Pale dots: rewritten; the numbered note shows what it says now. 1 tap a number or a side note to jump between them
The opening as it read in October 6, 2023

Islam in Africa is the continent's second most widely professed faith behind Christianity . Africa was the first continent into which Islam spread from Southwest Asia , during the early 7th century CE .1 Almost one-third of the world's Muslim population resides in Africa . Muslims crossed current Djibouti and Somalia to seek refuge in present-day Eritrea and Ethiopia during the Hijrah ("Migration") to the Christian Kingdom of Aksum . Like the vast majority (90%) of Muslims in the world, most Muslims in Africa are also Sunni Muslims ; the complexity of Islam in Africa is revealed in the various schools of thought, traditions, and voices in many African countries. Many African ethnicities, mostly in North, West and East Africa consider Islam their Traditional religion.2 The practice of Islam on the continent is not static and is constantly being reshaped by prevalent social, economic, and political conditions. Generally Islam in Africa often adapted to African cultural contexts and belief systems forming Africa's own orthodoxies. It was estimated in 2002 that Muslims constituted 40% of the population of Africa, a fraction which has slightly decreased in the meantime due to high birth rates in predominantly Christian Sub-Saharan Africa .3 Islam is the main religion of North Africa , the Horn of Africa , Sahel , the Swahili Coast , and West Africa , with minority immigrant populations in South Africa . The World’s Muslims: Unity and Diversity . Pew Research Center 's Religion & Public Life Project. These numbers are estimates, and remain a matter of conjecture. The spread of Christianity and Islam in Africa: a survey and analysis of the numbers and percentages of Christians, Muslims and those who practice indigenous religions. Discusses the estimations of various almanacs and encyclopedium, placing Britannica's estimate as the most agreed figure.4

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1177864004.
Today
Wikipedia's first sentence called it “largest religion in africa”. Today it says “second most professed faith behind christianity”. Sections present on October 6, 2023 no longer exist: “Nondenominational Muslims”. Read the current article and compare.
201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.

Then

largest religion in africa

Now

second most professed faith behind christianity

Sections that no longer exist

Present on October 6, 2023, absent today, with no near-matching heading in the current article and the article shorter overall, so this is not a renamed heading or a topic absorbed into a fuller treatment. 1 section of 400 characters or more gone since October 6 2023, with the article 1,604 characters shorter.

  • Nondenominational Muslims
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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