The Scroll Of Truth

You might want to throw-out "zeros" then... Because without the knowledge discovered and preserved by Islamic civilizations - you'd still be living in the "Dark Ages".

Not to mention still in Europe afraid of falling off the side of the world if they sailed too far past the Azores...

So that is why Europeans discovered North America?

Europeans discovered what?

Tell that to the people that already lived here... Very Eurocentric worldview you have there... Additionally there's evidence of exploration and discovery by Chinese, and Morrocans... But there's reasons whh Europe "took-off" - like the Black Death lowering populations and creating surplus food supplies. Favorable climate, and growing conditions, as well. Combined with a certain amount of ethnocentric chauvinism, and the ruthless desire for conquest and personal enrichment - led to the "Papal Bull of 'Discovery' " - which was a license to pillage... These matters are actually fairly complex. Kim Stanley Robinson wrote one or more books about it... Imagining a world evolving from a Chinese and Muslim empire - it's supposed to be quite good.

Anyway - things are far more complex than you realize. Not all muslims are wahabi salafist sunnis. There are Shia and Sufis as well - both variants of which have much good to be said for them.

So why after discovering Algebra and being the most advanced civilization not make any advancements and fall into third world status? The religion of Islam retards civilization advancements

Up until the 16th Century, Europe lived in the shadow of the Middle East, which was the World leader in science, tech, arts, culture, economy, etc. (Moorish Spain used to be the only European country with any institutions of higher learning)

There are two schools of thought on what lead to their decline. One was that on a quest to perfect knowledge to their satisfaction, they did, which lead to ossification of it, and so stagnation set in.

The other was that the Silk Road dried up as the Portugese and then the Spanish and so forth realized that Africa extended farther south than its northern shore that they had been familiar with, and that lead to trade unltimately extending to the Far East then later west. That and the secret of silk getting out caused the need for the overland trade route through Central Asia to weaken then collapse. Deprived of its source of fortune, the 'Islamic' (it wasn't all Muslim) World declined.

Meanwhile new areas for trade and plunder allowed for the ascendancy of Portugal, Spain, France, Britain, etc, obviously linked to the trade of goods acquired abroad (European countries without colonies remained as poor as ever).
Likewise the coinciding of the cessastion of colonization and the descendancy of these same countries is not accidental, collapsing just like Middle Eastern countries did before them.

As with Islam, a downturn in economic activity in Christian countries (largely dependent on outright theft) has turn advancement stale.

Currently it is Asia that is rising, and Africa as a whole has the world's fastest growing middle class.

You really haven't noticed this?

You're speaking of Islam as a monolith - which it isn't. There are forms of Christianity and Judaism that could be accused of doingnthe same thing.

As for "Third World Status" - I don't know where to start... Perhaps with Dos Pasos "The Development of Underdevelopment". Indonesia is a majority Muslim country - with a billion people. They do pretty well.