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In page Joseph Chamberlain:

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When the Cabinet failed to endorse his proposals, Chamberlain resigned. Balfour did not tell the meeting about Chamberlain's letter, instead telling many members he believed that Chamberlain was not serious. He then forced the resignations of Ritchie and Lord Balfour of Burleigh. The next day, Lord George Hamilton resigned, as did Devonshire.[citation needed][a] After Devonshire's resignation, Chamberlain asserted his authority over the Liberal Unionists, and the National Union of Conservative and Unionist Associations declared majority support for tariff reform.[1]