The correct answer is D. Each taking charge of their own part of Persia.
Explanation
The Great Game is the name given to the rivalry between Russia and Great Britain for the control of different eastern territories since the beginning of the 19th century because of the British Empire's drive to expand the Indian Empire, while the Russian Empire wanted access to the Indian Ocean and to the mineral wealth of Central Asia. Territorially, over the years, the borders of the two empires grew closer, in the Pamir in particular, with the Russian advance in Central Asia and the British in North India, forcing both to delimit their borders at the beginning of the 20th century, illegally entering the independent nation Afghanistan. The Great Game ended after the Anglo-Russian Convention, in which Persia was divided into a nominally independent central zone, a southern zone controlled by the British and a northern zone administered by Russia, in which each of the empires had to take carge of their own part of Persia. So, the correct answer is D. Each taking charge of their own part of Persia.
