President lincoln's efforts to wage the war were hampered both by , who criticized him for being too lenient on the south, and by northern democrats, who criticized the president for overstepping his authority.

Radical Republicans

Explanation:

President Lincoln faced opposition from both Democrats whom Republicans called 'Copperheads' in the American Civil War. Copperheads were not Southerners' sympathizers while Republicans accused Lincoln of too much support to Southerners. Since Democrats were opposed to Copperheads due to their unsympathetic opposition Lincoln's soft approach towards Southerners irked the Republicans.

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