What was the process illustrated in the diagram designed to do?
a. limit the individual states' role in altering the constitution
b. prevent certain parts of the constitution from ever being changed
c. make it difficult for the constitution to be amended
d. prevent small political groups from blocking changes to the constitution

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.

c) he felt the constitution clearly gave states this right.