Answer;
In the year 1600 the Ottoman Empire reached its peak and then began to decline.
Explanation;
The Ottoman Empire was one of the greatest empires that lasted for several hundred years. Under Suleiman the Magnificent, the sultan of the Ottoman Empire from 1520 to 1566, the empire reached its greatest peak of its territory and power. After several decades the Russian power began to grow and Ottoman naval supremacy was challenged by Europeans, notably at the Battle of Lepanto in 1671. Therefore; by 1600 the strength of the Empire was beginning to take a downward trajectory.