Ottoman Empire
(699 – 1342 AH / 1300 – 1924 AD)
The Ottoman Empire stands proud in the midst of human history, having carried the banner of Islam for over six centuries, conquering Europe and Asia and establishing a great state for Islam. Crusader Europe feared and dreaded it for centuries, and Europe continued to prepare to eliminate it, waiting for opportunity after opportunity. However, the Ottoman Empire and its leaders dealt them blow after blow until, when the Ottomans slumped to the ground, abandoned true Islamic rule and adopted the means of power, Crusader Europe pounced on them, tore them apart and spread Freemasonry among its youth and leaders, until the Ottoman Caliphate fell and was abolished at the hands of Mustafa Kemal Ataturk.
The Ottoman Empire was the country with the most Islamic conquests after the Umayyad Empire. The Ottomans renewed the call for jihad and conquest and launched conquests within Europe and parts of Asia Minor. The most prominent of these conquests was the conquest of Constantinople by Sultan Mehmed the Conqueror in 857 AH / 1453 AD. The Ottoman Caliphate is also credited with the conquest of Central Europe, as the Ottomans conquered the Balkans in 756 AH / 1355 AD, and all the countries of Central Europe submitted to them one after the other. Bulgaria was conquered in 774 AH / 1372 AD, Serbia was conquered in 788 AH / 1386 AD, Bosnia and Herzegovina in 792 AH / 1389 AD, as well as Croatia, Albania, Belgrade and Hungary. The Ottoman armies, led by Sultan Suleiman the Magnificent, reached the walls of Vienna and besieged it in 936 AH / 1529 AD, but were unable to conquer it. Likewise, more than one hundred and fifty years later, the Ottoman armies besieged Vienna in 1094 AH / 1683 AD during the reign of Sultan Mehmed IV.
Most of these lands remained in Muslim hands and subject to the Ottoman Caliphate throughout its period of power. However, they gradually began to unravel as the Ottoman Empire entered a period of weakness. By 1337 AH (1918 CE), the Ottoman Caliphate had no other remaining territory on the European continent except the city of Istanbul. The prolonged presence of these European regions under the Ottoman Caliphate meant that entire regions became Muslim-majority, such as Macedonia, Albania, Bosnia and Herzegovina, and large Muslim communities in Bulgaria, Romania, and Montenegro.
The conversion of most of the inhabitants of the regions controlled by the Ottomans to Islam is due to the Ottomans' just and equal treatment of the Muslim population. A weak, poor villager could rise to the highest and most influential positions in the Ottoman Empire, a form of social justice that was impossible in contemporary European societies. Security replaced conflict and chaos in these regions, and Europe benefited from the meticulous organization of the Ottoman military and its administrative systems, which relied primarily on efficiency. Followers of other religions, such as Christianity and Judaism, also enjoyed generous treatment in the regions ruled by the Ottomans for several centuries, the effects of which are clearly evident in the way these communities retain their languages, cultures, and religions to this day.

From the book "Unforgettable Countries" by Major Tamer Badr