Answer:Obsidian was volcanic glass in a ring of volcanoes along the Pacific coast of the Maya area. Mayan technicians made techniques for cutting sharp blades. As said, Mayans used specialized jade tools that helped their technological achievements. Maya is thought to be the first civil engineers of the Americas.
Explanation:
Come again I need this in English
The US could only attack from one angle Wich was the Omaha beach frount
Grant planned to split the confederacy which went well for the union
Lee planned to win enough wars and recruit the british for help to end the war (which was never done because the battle of sharpsburg)