What was the main purpose of the preamble to the Declaration of Independence?

This was an order issued during the civil war by president lincoln ending slavery in the confederate states

What impact did president grant’s executive order in 1876 have upon the cahuilla tribe? it forced them to disarm and surrender all money and firearms. it forced them to accept relocation to subpar lands in canada. it forced them to relocate to the cabazon reservation. it forced them to give up rights to water and other natural resources.

What is the relationship of the letters n.y.l> w.c to the new york infirmary for women and children