Am pretty sure there were 26
They are more like words and partial sentences. A symbol means an action or event rather then a letter.
If they would be like letters they would have been decrypted a lot easier, it took till the stone of roseta till they decrypted it
The Civil War was based on a disagreement on slavery, but slavery was not the main issue. The Union opposed the South's economic system (slavery) and the South was not too happy about that so they began seceding from the Union. President Lincoln's main goal was to preserve the Union and to get the Southern states to come back. Slavery was just something that had gotten taken care of during the Civil War.
