The answer is : 74 Mph Or Greater
A tropical storm can turn into hurricane when wind speed goes above 74 miles per hour, which give it enough forces to destroy a hard concretes buildings that it passed by
<span>The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities</span>
The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
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Interchangeable parts generally reduce costs and increase demand (and production).