It would be the Hawthorne Effect that is primarily responsible for the tendency <span>of individuals to modify or improve their behaviour simply because of an awareness of being observed. In addition, a common example of this phenomenon is the observational bias which is used in clinical psychology.</span>
I think it is 25℅ for multiple reason
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Roman roads were made for travel, trade, and to maintain control over the Empire's vast territories. They facilitated the rapid deployment of armies when needed. A road's main objective was to connect in as straight a path as possible two cities often hundreds of kilometers apart.
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