An urban area that controls neighboring farmland that is not under the control of an empire or another government is a "<span>D.city-state", since this has the relative control of a federal government without the responsibility of dealing with multiple "states". </span>
Because of the discovery of gold in San Francisco in 1848, many people began moving west to search for wealth and fame. The United States was discovering many things underground...gold, silver, and oil. These were some of the natural resources the United States had at the end of the 1800s.
The main thing that businesses and industries did during this time that caused the economy to slow down was to invest carelessly in business, to the point where they became wildly overvalued--leading to an economic bubble that "burst".
The Capture of Santa Fe, also known as the Battle of Santa Fe or the Battle of Cañoncito, took place near Santa Fe, New Mexico, the capital of the Mexican Province of New Mexico, during the Mexican–American War on 8 August through 14 August 1846. No shots were fired during the capturing of Santa Fe.
hope this helps
I believe Hannible crossed the alps to invade Rome.