C: interview us and Soviet leaders about differences in customs that affected the negotiations  
Explanation:
- Cultural history is not interested in explaining events from a political perspective.
- In this case, historian would check why someone is stubborn and not keen to let go when it comes to some agreements.
- He would check why Soviet or American negotiators are strictly using certain sentences, why do they behave the way they behave, etc.
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 Urban environmentalism then may be described as the collective effort to hold, protect, and shield the complicated urban surroundings and concrete environmental characteristics.
The collective effort to maintain, guard and protect the complicated city environment and urban environmental characteristics. City sprawl takes place although it negatively impacts the surroundings. urban sprawl occurs when there is room for towns to make bigger outward. it's far less complicated and much less expensive to construct outward than it is to construct upward. building outward also permits for much less crowded situations.
City regions can grow from increases in human populations or from migration into urban areas. Urbanization regularly outcomes in deforestation, habitat loss, and the extraction of freshwater from the surroundings, which may decrease biodiversity and regulate species levels and interactions.
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By Power Checks and Balances, no branch should have enough power to unbalance another.
        
             
        
        
        
The election of Nelson Mandela as president was the 20th-century event in South Africa's history that is most closely associated with the end of apartheid.
<h3>What is the Apartheid?</h3>
An Apartheid refers to the white-ruled South Africa's Nationalist Party that contributed to the country's harsh and institutionalized system of racial segregation.
The national party came to an end in the early 1990s in a series of steps that led to the formation of a democratic government in 1994.
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