In an era when NASA is led by an African American man (Administrator Charles Bolden<span>) and a woman (Deputy Administrator </span>Dava Newman<span>), when </span>recent NASA Center Directors<span> come from a variety of backgrounds, it's easy to overlook the people who paved the way for the agency's current robust and diverse workforce and leadership. Those who speak of NASA's pioneers rarely mention the name Dorothy Vaughan, but as the head of the NACA's segregated West Area Computing Unit, Vaughan was both a respected mathematician and NASA's first African-American manager. I learn this from class and from a book I hope this helps
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In the traumatic aftermath of World War One, many questioned whether man's civilization had revealed a dooming weakness, and if one of its greatest achievements—democracy—was only a fragile ideal. Did the war to make the world "safe for democracy" expose a world unfit for democracy? And what about America? For 130 years the republic had survived chronic growing pains and a murderous civil war, but was it, too, displaying signs of dissolution and rot? Voter apathy, corruption in city politics, the "tyranny of the fifty-one percent," the suppression of black voting in the South—American democracy seemed worn, cracked, and vulnerable.
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Answer:
I think it is the last one, but I'm not sure.
Explanation:
Sorry if I'm wrong
