Answer:
Utah
Explanation:
On May 10, 1869, the presidents of the Union Pacific and Central Pacific railroads meet in Promontory, Utah, and drive a ceremonial last spike into a rail line that connects their railroads. This made transcontinental railroad travel possible for the first time in U.S. history.
Answer:The Han dynasty (206 BC – 220 AD) of ancient China experienced contrasting periods of economic prosperity and decline.
Explanation:
