Final answer:
The Ottoman Empire reached its peak under Suleiman I and began to decline after facing setbacks post-1683.
Explanation:
The Ottoman Empire reached its peak under Suleiman I (r. 1520-1566). By 1529, they nearly took Vienna and had a significant influence in European politics.
However, after 1683, the Ottomans faced setbacks and by 1774, the empire had weakened significantly, leading to its eventual fall in 1918.
Various factors like military corruption, decentralization, and cultural stagnation contributed to the Ottoman Empire's decline.
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