Explanation:
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Unrestricted submarine warfare is the practice of using submarines to attack and sink all forms of enemy shipping, whether they are military or civilian. It is most closely associated with the First World War when Germany's decision to use USW brought the US into the war and led to their defeat.
Answer:
This Empirical evidence can be gathered using quantitative research and qualitative research methods.
Explanation:Empirical research method conducted can be using analysed quantitative and qualitative methods.
(1)Quantitative method: It is used to opinions behaviors or other defined variables.
(2)It is used to gather numerical data methods are survey polls.
(2)Qualitative method: it is used to find opinions,meaning,underline subject from its reasons.
(2)They are focus of groups, interviews,experiments.
President Kennedy made art part of him and his family's life in the White House. Jacqueline Kennedy loved poetry as well and was also deeply committed to both music and the visual arts. He read widely, but never considered himself an intellectual or an original thinker. Basically he made the white house a lot more artistic and feel more like home rather than just a work place.