"Workers at the rally admitted planting a bomb" did not occur in the Haymarket Square incident, since it is still unknown who threw the bomb that set off the violence.
D. It allows citizens of many European countries to freely travel across the continent.
Answer:
American mathematician and aerospace engineer
who in 1958
<em> became the first African American female engineer to work at the National Aeronautics and Space Administration (NASA).</em>
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<em>U 2 can help me by marking as brainliest........</em>
http://www.naturalhistoryonthenet.com/Continents/images/continentsall2.gif