The three branches of government that still exist today are: Legislative, Executive and Judicial.
Industrialization helped fuel the start of imperialism in the 19th century. Soon, industrialization spread throughout Europe and to the United States. These new industrialized nations needed more raw materials to fuel their mass production and population growth.
I believe it’s navigation.
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If the country or person feels the religion or culture is a threat they may exterminate them, only in some cases