A land submarine? I think
Advocacy is often seen as working “within the system” where as activism is seen as working “outside the system” to generate change.
The main cause for the great migration, was the desire of African Americans to get away from segregation and the Jim Crowe laws. They also wanted to find better job opportunities as well. They took advantage of the needs of industrial work after World War I up North. They also confronted racial, prejudice, economics, and political challenges that African Americans faced.
Classical civilizations created "monuments" to honor wealth and powerful individuals, since these monuments were intended both to inspire the citizens and to intimidate foreign nations.
