The Northwest Ordinance was an act that provided rules for governing the Northwest Territory and paved the way for -
a. admission of new states to the Union.
b. ratification of the U. S. Constitution.
C. expansion of slavery to northern states.
d. industrialization of the northern U. S.

a. admission of new states to the Union.

Explanation:

At the time that the Northwest Ordinance was created, it was chaotic to admit states. This act helped make is a smoother one.

Hope this helps :)

the answers is b.   environments.

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.