Why did Russia concede so much of its territorial power in east Asia?

he name Russia for the Grand Duchy of Moscow started to appear in the late 15th century and had become common in 1547 when the Tsardom of Russia was created.

For the history of Rus' and Moscovy before 1547 (see Kievan Rus' and Grand Duchy of Moscow). Another important starting point was the official end in 1480 of the overlordship of the Tatar Golden Horde over Moscovy, after its defeat in the Great standing on the Ugra river. Ivan III (reigned 1462–1505) and Vasili III (reigned 1505–1533) had already expanded Muscovy's (1283–1547) borders considerably by annexing the Novgorod Republic (1478), the Grand Duchy of Tver in 1485, the Pskov Republic in 1510, the Appanage of Volokolamsk in 1513, and the principalities of Ryazan in 1521 and Novgorod-Seversky in 1522.[1]

After a period of political instability, 1598 to 1613 the Romanovs came to power (1613) and the expansion-colonization process of the Tsardom continued. While western Europe colonized the New World, the Tsardom of Russia expanded overland – principally to the east, north and south.

This continued for centuries; by the end of the 19th century, the Russian Empire reached from the Black Sea to the Pacific Ocean, and for some time included colonies in the Americas (1732–1867) and a short-lived unofficial colony in Africa (1889) in present-day Djibouti.[2]

Expansion into Asia

The first stage from 1582 1650 so I North-East expansion from the Urals to the Pacific. Geographical expeditions mapped much of Siberia. The second stage from 1785 to 1830 looked South to the areas between the Black Sea and the Caspian Sea. The key areas were Armenia and Georgia, with some better penetration of the Ottoman Empire, and Persia. By 1829, Russia controlled all of the Caucasus as shown in the Treaty of Adrianople of 1829. The third era, 1850 to 1860, was a brief interlude jumping to the East Coast, annexing the region from the Amur River to Manchuria. The fourth era, 1865 to 1885 Incorporated Turkestan, and the northern approaches to India, sparking British fears of a threat to India in The Great Game.[3][4]

Table of changes

Explanation:

the answer is b. osage.

it increase by 12% a year from 1812-1820