The Mongol Empire existed during the 13th and 14th centuries and it is recognized as being the largest contiguous land empire in history.
this question needs more support in order to be answered.
Spanish and European settlers bout decease and cattle
Answer:
Northerns who moved south during the reconstruction were called Carpetbaggers.
Over population is caused many people moving there for business and not enough leaving and or space or job shortage it leads to crowding and shortages
