Slavery in the pre-Civil War U.S. South most closely resembled chattel slavery.
The answer is the 13th Amendment also known as
the Emancipation Proclamation that abolished slavery. This led to the
liberation of slaves in the South. Many
escaped while others joined the Union who invaded the Southern states. It was passed after the Union forces fought
in the Battle of Antietam and Lincoln used that to pass the Emancipation
Proclamation.
Answer:The great flat valleys between hills with great climatic condition
Explanation : The reason ancient civilizations develop in valleys of rivers was due to climatic conditions that favoured agriculture and provided them with water to drink.
The land was very fertile ground suitable for agricultural activities, sufficient water made it easy to irrigate their crops and easy transportation. The areas were also flat with didn't require much work to prepare the land to build shelter.