Answer:
In describing Lincoln, Obama reinforces the feeling of reunification, unity and depolarization of American society.
Explanation:
Lincoln was a president who acted at a time of extensive national polarization. Obama also took over as president at a time of polarization and political and racial disagreements. In this case, when Obama quotes and describes Lincoln, he reinforces his commitment to uniting the country again, using the Lincoln government and his political strategy as a mirror for the political strategy that he himself wants to implement.
Its B. The automobile era begins at the turn of the century.
Maybe efficient, you didn't put the passage
