Which describes a major challenge facing the builders of the transcontinental railroad?

What would be the most relevant question to ask to find out why tutankhamen died? what was tutankhamen’s age when he died? was a doctor with tutankhamen at his death? why was tutankhamen mummified after his death? did tutankhamen’s body have evidence of disease?

How many states were there when the constitution was written?

Because of the amount of precipitation it receives, most of populated australia can be considered a) alpine. b) piedmont. c) semi-arid. d) tropical rainforest.