Oftentimes it is "removing barriers to trade" that motivates countries to join regional trade blocs, since members of such "blocks" have completely free trade with one another.
Answer:
The Atmosphere, and the Surface of the Earth, including the Litosphere and the Hydrosphere.
Explanation:
Living organisms depend on the Atmopshere because it is the layer where several crucial cycles for life on Earth take place, like the Nitrogen Cycle and the Carbon Cycle.
Living organisms also depend on both the Litosphere and the Hydrosphere because these are the layers where they live. Terrestrial organisms dwell on the Litosphere, and water organisms dwell on the Hydrosphere.
Answer:
B. Industrialization and urbanization
Explanation:
The nineteenth century is the period of time when the industrial revolution had taken a hold of society completely. Never in the history of the human civilization had there been such cooperation that significantly caused the progress of our species.
Industrialization caused a large number of people to settle in cities. Urbanization caused a large mass of people to live together. The dynamics of human interaction had changed.
In order to understand how social interactions were affected people started studying human behavior in the nineteenth century.
