Communicate more effectively and more quickly
<span>Quakers (or Friends) are members of a group of religious Christian movements which is known as the Religious Society of Friends in Europe, Australia, New Zealand and parts of North America; and knownas the Friends Church in Africa, Asia, South America and parts of the US.</span>
The decision in Dred Scott v. Sandford i believe.
Answer:Of all the world's ancient calendar systems, the Maya and other Mesoamerican systems are the most complex, intricate and accurate. Calculations of the congruence of the 260-day and the 365-day Maya cycles is almost exactly equal to the actual solar year in the tropics, with only a 19-minute margin of error.
Maya astronomer-priests looked to the heavens for guidance. They used observatories, shadow-casting devices, and observations of the horizon to trace the complex motions of the sun, the stars and planets in order to observe, calculate and record this information in their chronicles, or "codices". From these observations, the Maya developed calendars to keep track of celestial movements and the passage of time. The Maya also kept detailed records of the moon, although these do not seem to constitute a formal lunar calendar
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ok I haven't learnt this stuff so I'm not sure about the answers but I am sure that 11 is GPS
