The primary reason for the rise of the Ottoman Empire was its strategic location, which allowed it to control key trade routes between Europe, Asia, and Africa. This led to prosperity and territorial expansion. Conversely, its fall was primarily due to a combination of internal strife, economic difficulties, and the impact of World War I, which resulted in territorial losses and weakened central authority. Nationalist movements within its diverse population further accelerated its decline, culminating in its dissolution and the establishment of the Republic of Turkey in 1923.