Which statement correctly contrasts Mary Ludwig Hays' contributions during the Revolution to those of Betsy Ross?
Hays took charge of her husband's farm and Ross tended to wounded soldiers.
Hays made guns and cannons and Ross helped on the home front
Hays operated a cannon in battle and Ross made the American flag
Hays was killed in battle and Ross pushed for equal rights for women

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

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when you sing louad enough the vibration of you voice is able to shatter glass so yes vibration is your answer

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answer; shays rebellion;