Why were children valued as laborers in coal mines during the industrial revolution?

Who was in charge of american troops during world war i?

Which of the following best describes the aztecsa) skilled engineersb) peaceful farmers c) skilled writers d) mountain dwellers

After nine states had ratified the constitution by mid-1788, other states quickly followed. all thirteen states had to obey it. it became law in the united states. none of the states had to obey it.