Answer:
Justinian I served as emperor of the Byzantine Empire from 527 to 565. Justinian is best remembered for his work as a legislator and codifier. During his reign, Justinian reorganized the government of the Byzantine Empire and enacted several reforms to increase accountability and reduce corruption.
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
The answer may be "tobacco".
It presented unity and a new direction after the difficult years following World War I.
the Mexican government believed they would benefit because they would get more land and more profit
