• Beginning of thr 19th century

    Beginning of thr 19th century
    It is called the "century of industrialization." The fundamental characteristic of this century is that it is a period of great changes.
  • End of the 19th century

    End of the 19th century
    The last decades of the nineteenth century were marked by rapid expansion and change in the United States, including the disappearance of the great American frontier and the acquisition of island possessions overseas as an outcome of the Spanish–American War.