The correct answer is B.) Northwest Ordinance of 1787
The Northwest Ordinance made it possible to distinguish where the free states were and where the slave states were and forbade slavery in Northern Territories.
Really segregated between the black and whites .
It took place between 1 July and 18 November 1916 on both sides of the upper reaches of the River Somme in France. The battle was intended to hasten a victory for the Allies and was the largest battle of the First World War on the Western Front.