The correct answer is D) both created architectural achievements.
What the Ottoman Empire and the Mughal Empire have in common is that both created architectural achievements.
Both Empires were the largest Muslim Empires in modern times. The Ottoman Empire controlled Western Asia, Southeast Europe, and some parts of the North of Africa. The Ottomans conquest Constantinople in 1453 and ended the Byzantine Empire. The Mughal Empire started in 1526 and united millions of Indians in one strong central government. The empire conquered many territories and prospered through trade in the times of Baber, Humayun, and Akbar.