Archimedes invented the screw.
Hope this helps!
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Your welcome man. no problem
The correct answer is option D.
Tariffs are defined as an import or export tax on goods between sovereign states. The main purpose behind tariffs is to help or encourage local or national industries or markets so they can remain competitive. They are often used to help level or equalize the trade balance or trade deficit with other nations as well as to protect local industries in their infancy and to foster what's called 'import substitution industrialization'.
