Answer:
Right choice here:
Presidents have enhanced their constitutional powers beyond what is expressed in the Constitution in order to deal with major crises.
Explanation:
Abraham Lincoln was the US president during the Civil War (1861-1865). A very hard and complex time, where the absolute imperative of winning the war overruns other concerns, yet democractic governance demands taking and ceding, keeping balances. In such a situation, it should not be surprising that the leader of a nation in war does things that actually or apparently exceed his powers. On his side, FDR led the nation in deeply troubled times; first, he had to fight the effects of the Great Depression and stimulate recovery; and later , he led the country to play a pivotal role in WWII, the most destructive and horrible of wars.