Upon the death of the childless tsar Feodor on 7 January 1598, self-preservation as much as ambition constrained Boris to seize the throne. Had he not done so, the mildest treatment he could have hoped for would have been lifelong seclusion in a monastery. His election was proposed by
Patriarch Job of Moscow, who believed that Boris was the only man who would be able to cope with the difficulties of the situation. Boris, however, would only accept the throne from a
Zemsky Sobor, or national assembly, which met on February 17 and unanimously elected him on the 21st. On September 1, he was solemnly crowned tsar. Despite the recovery of the economy, at the end of the 16th century the effects of the economic and social crisis in Russia had not been entirely eliminated. This was compounded by a devastating famine in 1601–1603, which killed hundreds of thousands of people. Boris's active relief efforts did not succeed in significantly mitigating the effects of the disaster. Social tensions became more severe, and a large-scale flight of peasants and slaves occurred. In 1601 and again in 1602, the government decreed that the traditional right of peasants to move on Saint George's Day was being restored; however, it was only to apply to the lands of the provincial nobility and the lowest level of courtiers, not to court and state lands or large estates. These measures only exacerbated social tensions: many peasants believed that the decrees had abolished serfdom, while landowners refused to comply with the allowance of peasant movement. The law was not reissued in 1603, and Boris resumed his previous policy of enforcing serfdom, further alienating the peasantry. Unrest began among the lower classes, leading to disturbances in several towns and a battle between the army and insurgents outside Moscow. The greatest unrest was in the southern frontier region, where large numbers of escaped peasants and slaves had gone and joined the ranks of the 'free'
Cossacks. Among the ranks of the Cossacks were also military slaves of the boyars and even indigent nobles. These Cossack groups posed a significant military threat and were made even more restless by the construction of the new border towns under Boris, which encroached upon their lands. The tsar took repressive measures to rein in the Cossacks, to no avail. More unrest was caused in the south by the government's policy of imposing mandatory labor on state lands, which was done to guarantee the availability of food in the region. Thus, when
a pretender appeared claiming to be the late
Tsarevich Dmitry, supposedly having survived Godunov's assassination attempt, he received significant support from the free Cossacks and the rebellious population of the southern frontiers. Godunov's government asserted that the pretender was really Grigory Otrepyev, an escaped monk and former nobleman. In the autumn of 1604, the False Dmitry crossed the border into Russia from Poland–Lithuania with a force of 2,000 Polish noblemen and a few thousand Cossacks. He attracted new forces as he advanced deeper into Russia. The victories won by government forces over the pretender at the battles of Novgorod-Seversk and
Dobrynichi failed to put an end to the threat, as the whole southern frontier region rose up in revolt. The inhabitants of the southern towns willingly recognized the False Dmitry as tsar and surrendered their governors to him. Historians such as
Sergei Platonov and
Vasily Klyuchevsky believed that the False Dmitry was promoted by boyars opposed to the rule of the Godunovs, but Andrei Pavlov writes that there is no "direct and reliable evidence of this." Rather, Pavlov writes, the unrest at the time of the pretender's invasion came from the lower rungs of the social hierarchy. Boris died on . According to the French mercenary captain
Jacques Margeret, who was at the palace at the time, the tsar died of a stroke. He took monastic orders shortly before his death and accepted the
monastic name Bogolep. Although Godunov had been seriously ill for a long time, his death was a shock for everybody. The boyars soon crowned Boris's sixteen-year-old son
Feodor as tsar, but Boris's death caused discord among the nobility. Many people believed that Boris was actually guilty of regicide and usurpation and viewed his death as divine punishment and proof of the False Dmitry's authenticity. In his last days, Boris Godunov had promoted Pyotr Basmanov, a young officer of non-noble origin who had served with distinction in the first campaign against the False Dmitry. Boris hoped that Basmanov would secure the future of his dynasty. However, Basmanov was offended when, after Boris's death, the powerful courtier Semyon Godunov placed his own son-in-law Andrei Telyatevsky 'above' Basmanov in the service registry. This caused Basmanov to betray the Godunovs. More important was the opposition of detachments of servicemen from the southern towns such as Ryazan and Tula. In May 1605, the army at Kromy went over to the side of the False Dmitry, and on 1 June 1605 a revolt in Moscow by supporters of the pretender overthrew Tsar Feodor. On June 10, Feodor and his mother, Boris's widow, were killed by agents of the False Dmitry. == Family ==