Why is the emancipation proclaimed as a "fit and necessaly war measure!"

it’s open ended

What contributions did muslims make to astronomey

Which statement is not true about the missouri compromise? 1.) slave owners could pursue escaped slaves into “free” regions. 2.) maine entered the union as a free state. 3.) slavery was allowed throughout the louisiana territory. 4.) missouri entered the union as a slave state.

Idont know any of these can anyone me