To understand the Historic highlights, create a timeline diagram depicting the important events. The following diagram shows the elaborative events of the United States from 1790 to 1840. As the timeline diagram suggests, coins were firstly made in 1792. A year later, several buildings were constructed for business purposes. In 1816, steam engines were installed, and decades later, the first gold rush began in the United States, followed by constructing a second building built and a stream coin press installed. It should be noted here that a timeline diagram consists of a horizontal bar or line representing time progressing from left to right or right to left (depending upon the region. As the graph below depicts, this horizontal bar is marked with events or steps to indicate when a particular thing happened.