Avicenna's main contribution was within (D) philosophy. Avicenna made significant strides in his ideas of metaphysical doctrine and the existence of God.
The Act stipulated that the settlers of the Kansas territory would vote on whether to permit slavery. ... Border ruffians helped to secure a proslavery legislature in Kansas, which drafted a proslavery constitution known as the Lecompton Constitution.
The population declined because of deaths caused by poor working conditions.
