Which statement about the sui dynasty is correct?

a.
it proclaimed islam as the state religion of china in the ninth century.

b.
it reunited northern and southern china in the sixth century.

c.
it began building the great wall of china in the third century b. c.

d.
it fell to the forces of genghis khan in the twelfth century.
c?

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.