Short Answer 
The Ottoman Empire, founded by Osman I in the late 13th century, was a prominent Turkish Empire known for its cultural diversity and contributions to art and science. The genocide aimed at eradicating diverse ethnic groups within the empire was driven by a desire for a homogenous nation-state, and first-hand accounts, like that of Lieutenant Baas, play a critical role in evidencing the reality of these events against government denials.
Step 1: Understanding the Ottoman Empire
The Ottoman Empire was a vast and influential Turkish Empire founded by tribal leader Osman I. Established in the late 13th century, it controlled significant regions in Europe, Asia, and Africa for centuries. The empire was known for its rich cultural diversity and significant contributions in various fields such as art, architecture, and science.
Step 2: The Genocide and Its Purpose
The genocide associated with the Ottoman Empire was aimed at destroying the empire’s diverse ethnic groups. This systematic destruction was motivated by attempts to create a more homogenous nation-state. By targeting various ethnic populations, the ruling government sought to eliminate multiculturalism, aiming for a singular, unified identity.
Step 3: The Importance of First-Hand Accounts
A crucial aspect in discussing this historical event is the first-hand account provided by Lieutenant Baas. His testimony provides significant evidence that contradicts the denials issued by the Ottoman government regarding the mass killings. Ultimately, this account serves as a vital piece of historical documentation that challenges the narrative of denial and confirms the reality of the genocide.