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In page Catherine Ivanovna of Russia:

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Catherine was involved in the events of 7 March 1730, when a group of nobles (between 150 and 800, according to sources), among whom were many officers of the Guards, arrived at the palace and gave a petition to the Empress. In this petition they requested the re-examination of the form of government that would be pleasing to all the people. Anna hesitated, but Catherine reportedly forced the Empress to sign the petition.[citation needed]