日本語訳をお願いいたします。
Although the experiment in grand coalition had failed, the need for some political unity remained. As the National Union Government was collapsing, Kauffmann arranged an alliance between his Party of the Right and Moutrier's Liberal League, seeking to achieve change that would outlive the occupation. The primary objective was to address the perennial grievances of the left by amending the constitution; in November 1917, the Chamber of Deputies launched a wide-ranging series of debates on various amendments to the constitutions. Ultimately, the constitution was amended to prohibit the government from entering into secret treaties, to improve deputies' pay (hitherto set at just 5 francs a day), to introduce universal suffrage, and to change the plurality voting system to a proportional one.