They were working in factories or fields
Blockades blocked the south from getting any supplies or weapons. They were surrounded and could not keep a fair fight. Lee knew this, thus leading to the surrender at Appomattox Courthouse.
They believed it helped them in the afterlife that's why it was so important
Hot air goes up and the cold air goes down what the air currents forms when the atmosphere moves the excess hot air and warms the lower latitudes to the cooler air has high latitudes and so the air rushes in to replaces it. hopefully that help have a nice day :)