<span> face-to-face sessions among the Great Powers of </span>Austria<span>, </span>Britain<span>, </span>France<span>, </span>Russia<span>, and sometimes Prussia, with limited or no participation by other delegates.</span>
<span>. built dams to provide for irrigation</span>
irrigation was used to farm lands that were originally arid and semi arid<span>4. converted bad land into agricultural fields</span>
<span>these bad lands otherwise ARID AND SEMI ARID were successful reclaimed through irrigation methods.
</span><span></span><span>5. invented new farming methods
</span> improvements in agricultural techniques and tools bolstered the agricultural sector making it one of the important source of taxes for the dynasty.
Hitler's blunders contributed to the allied victory; ex, withholding the Panzer reserves away from local control of Rommel prior to the Normandy invasions. His stance of not retreating, led to the debacle of the Falaise pocket which destroyed many of his best divisions in the west, among them the 12th SS, Panzer Lehr, and others. Hope this helps.