Question: When was the real turning point for the worst in Russia's economic history?
About the article "Great Depression", section "Other "great depressions"".

Candidate passages:
The Hellenistic Age was a major turning point both in Greek economic history and Roman economic history, it opened the way for trade with the East, new agricultural techniques were developed and the spread of a relatively uniform currency throughout the near East began. 
In 1988 military spending was a single line item in the Soviet state budget, totaling 21 billion rubles (68.8 billion 1988 U.S. dollars).
Given the size of the military establishment, however, the actual figure was considered to be far higher.
However, in the wake of the breakup of the Soviet Union and the emergence of Russia as an independent state, between 1991 and 1997 Russia's defence spending fell by a factor of eight in real prices.
Between 1988 and 1993 weapons production in Russia fell by at least 50% for virtually every major weapons system.
In 1998, when Russia experienced a severe financial crisis, its military expenditure in real terms reached its lowest point— barely one-quarter of the USSR's in 1991, and two-fifths of the level of 1992, the first year of Russia's independent existence.
However, since the rise to power of Vladimir Putin and the exposure of the poor state of preparedness amongst Russia's armed forces in the Chechen Wars and the 2008 conflict with Georgia over South Ossetia, Russian military spending has rapidly increased, particularly after the 2008 Russian military reform.
According to SIPRI, Russian military spending in real terms in 2012 was the highest it has been since Russia's re-emergence as an independent nation, but is still far lower than the estimated military expenditure of the USSR in 1990 - its final full year of existence (US$291 billion at 2012 prices). 
  Association of Russian Sinologists (since 1986); Union of Journalists of Russia (since 1989);   Russia's National Committee on Trade and Economic Cooperation with the Pacific-Asian Countries (Member of the Presidium since 1991);   Russia's Association "For a Dialogue and Cooperation with the Pacific-Asian Countries" (Member of the Presidium since 1989);   Association of Russia's Diplomats (since 1990); Political Science Association;   Association of Asian Studies; Academician of the International Ecological Academy and of the Academy of Humanities;   Russia's Council on Foreign Policy;   Russia's Foreign Minister's Advisory Committee;   Council for Security Cooperation in Asia and the Pacific;   Chairman of Dissertation Council on Political Science and History, Diplomatic Academy;   Experts Council on Political Science, Ministry of Education, Russia.  
After Russia's defeat of French Napoleonic forces in the 1812 war, Tsar Alexander I turned his attentions once more to the North Caucasus, assigning one of his most celebrated generals, Aleksey Petrovich Yermolov, to the pacification of the region.
In 1817, Russian forces under Yermolov's command embarked upon the conquest of the Caucasus.
Yermolov's brutal tactics, which included economic warfare, collective punishment and forcible deportations, were initially successful, but have been described as counterproductive since they effectively ended Russian influence on Chechen society and culture and ensured the Chechens' enduring enmity.
Yermolov was not relieved of command until 1827.
A turning point in the conflict was marked in 1828 when the Muridism movement emerged.
It was led by an Avar, Imam Shamil.
In 1834 he united the North Caucasus nations under Islam and declared "holy war" on Russia.
In 1845 Shamil's forces surrounded and killed thousands of Russian soldiers and several generals in Dargo, forcing them to retreat.
During the Crimean War of 1853–6, the Chechens supported the Ottoman Empire against Russia.
However, internal tribal conflicts weakened Shamil and he was captured in 1859.
The war formally ended in 1862 when Russia promised autonomy for Chechnya and other Caucasian ethnic groups.
However, Chechnya and the surrounding region, including northern Dagestan, were incorporated into Russia as the Terek Oblast. 
As of , Russia's voting history is as follows: