text: One member of this family lost a fortune by investing in the Andros Fibre Company promoted by Ambrose Shea, which failed to cultivate the sisal plant.
full_question: One member of this family lost a fortune by investing in the Andros Fibre Company promoted by Ambrose Shea, which failed to cultivate the sisal plant. In a speech supporting that decision, he cited the "undeveloped estates" of the West Indies as a key to his policy of tariff reform. That man of this surname toured the country with fellow party member Charles Dilke supporting the "Unauthorized Program," promising "three acres and a cow" to all farm workers, and co-founded the National Education League. Known for wearing a ribboned monocle, he engineered the "Khaki Election" in which he won re-election of the ill Lord Salisbury, who had appointed him Colonial Secretary in the run-up to the Boer War. That man's son, serving as Foreign Secretary, met with Gustav Stresemann and Aristide Briand to sign the Locarno treaties in 1925. For 10 points, name this family of British politicians including Joseph, his son Austen, and a prime minister who proclaimed "peace in our time" before being succeeded by Winston Churchill.
first_sentence: One member of this family lost a fortune by investing in the Andros Fibre Company promoted by Ambrose Shea, which failed to cultivate the sisal plant.
raw_answer: Chamberlain [or Joseph Chamberlain; or Neville Chamberlain; or Austen Chamberlain]