The Ottoman wars in Europe were a series of military conflicts between the Ottoman Empire and various European states dating from the Late Middle Ages up through the early 20th century.
But I would tell about the main one which change the face of Europe.
1453 — fall of Constantinople that was a great start to conquer Europe.
The attackers were commanded by the Sultan Mehmed II, who defeated an army commanded by Emperor Constantine XI Palaiologos and took control of the imperial capital, ending a 53-day siege that began on 6 April 1453.
They began go west instead of south
Ghulams were similar to janissaries .
Ghulam (Arabic: غلام, ALA-LC: ghulām) is an Arabic word meaning servant, assistant, boy, or youth. It is used to describe young servants in paradise.
Ghilman were slave-soldiers and/or mercenaries in the armies throughout the Islamic world, such as the Safavid, Afsharid and Qajar empires. Islamic states from the early 9th century to the early 19th century consistently deployed slaves as soldiers, a phenomenon that was very rare outside of the Islamic world.
The ghilman were slave-soldiers taken as prisoners of war from conquered regions or frontier zones, especially from among the Turkic people of Central Asia and the Caucasian peoples .
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B. Taxation without representation
Answer: After three days of holding their own against the Persian king Xerxes I and his vast southward-advancing army, the Greeks were betrayed, and the Persians were able to outflank them. Sending the main army in retreat, Leonidas and a small contingent remained behind to resist the advance and were defeated.
