The February Revolution (sometimes called the March Revolution, due to discrepancies between the Russian and Western calendars) was a large protest against Czar Nicholas II of Russia in March 1917. It forced the Czar to abdicate the throne and did not allow his heir, Alexis, to inherit it. A provisional government was established with Alexander Kerensky as the leader. The ineffective new government was later overthrown in the October Revolution, which installed the Bolshevik Party under V.I. Lenin.