Final answer:
President Abraham Lincoln expresses admiration for the determination and loyalty of Northern citizens in the Gettysburg Address by praising the commitment of the people to a democratic government.
Step-by-step explanation:
The part of the Gettysburg Address where President Abraham Lincoln expresses admiration for the determination and loyalty of Northern citizens is when he states, "It is for us the living... to be here dedicated to the great task remaining before us-that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion-that we here highly resolve that these dead shall not have died in vain-that this nation, under God, shall have a new birth of freedom-and that government of the people, by the people, for the people, shall not perish from the earth." In this statement, Lincoln praises the citizens' commitment to the ideals of a democratic government and their efforts to uphold them.