Complex sentence: The Haavara Agreement (Transfer agreement) was signed on 25 August 1933, the success of this, together with lessened dependence on trade with the west had by 1937 largely negated the effects of the Jewish boycott on Germany.
Split into simpler sentences: The Haavara Agreement (transfer agreement) was signed on 25 August 1933. The success of this, together with lessened dependence on trade with the west, had by 1937 largely negated the effects of the Jewish boycott on Germany.