Answer:
Travelers and messengers spread the art of iron working. -Iron working was spread through trade. Iron working technology led to the expansion of agriculture. Iron-working technology intensified warfare between communities due to the production of iron weapons.
The Constitution of the United States established America’s national government and fundamental laws, and guaranteed certain basic rights for its citizens. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. Under America’s first governing document, the Articles of Confederation, the national government was weak and states operated like independent countries. At the 1787 convention, delegates devised a plan for a stronger federal government with three branches—executive, legislative and judicial—along with a system of checks and balances to ensure no single branch would have too much power. The Bill of Rights were 10 amendments guaranteeing basic individual protections, such as freedom of speech and religion, that became part of the Constitution in 1791. To date, there are 27 constitutional amendments.
The Confederacy lost 1,724 killed, 9,233 wounded and 2,503 missing; about 13,500 total.
The Union lost 1,694 killed, 9,672 wounded and 5,938 missing; about 17,300 total.
Chancellorsville was the fifth costliest battle of the Civil War, and the bloodiest Civil War battle up to that time.