Debate Points for Benjamin Disraeli history assignment help

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i have a diskussion tomorrow and We need benjamin disraeli to win.
Our competitors are
William Ewart Gladstone
Robert Gascoyne-Cecil, 3rd Marquess of Salisbury

Our main arguement is that we can help ireland only when england is strong.

I need to persuade a jury of who should become englands new prime minister
could you find good stuff about benjamin and bad stuff about the competitors so i can be ready for it?