How might a geologist study the history of the earth

Geology is the study of what the earth is made of, its structure, materials, the processes affecting it and the organisms that inhabited the earth. A geologist may study the history of the earth by learning about the organisms and events in the past, how they changed over time, and how they may affect the future.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.