Final Answer:
The first Russian opera composer recognized internationally was Mikhail Glinka.
Step-by-step explanation:
Mikhail Glinka: Mikhail Glinka, often considered the father of Russian classical music, was the first Russian composer to gain international recognition for his operatic works. His opera "A Life for the Tsar" (also known as "Ivan Susanin") premiered in 1836 and played a pivotal role in establishing Russian opera on the global stage.
Significance: Glinka's contributions were instrumental in shaping the Russian classical music tradition. His operas, blending Russian folk elements with Western musical forms, marked the beginning of a distinct Russian operatic tradition.
International Recognition: "A Life for the Tsar" earned Glinka acclaim beyond Russia's borders, garnering recognition for Russian composers on the international music scene.