Which of the following was not an achievement made during the hellenistic period?
a. the compound pulley
b. the navigational compass
c. the understanding of arithmetic and geometry
d. a method for calculating the circumference of the earth

While knowledge of mathematics, computation of volume, geometry were very characteristic of the Greeks and Hellenistic period, what is not their invention and achievement found during the Hellenistic period is a navigational compass.  Compass first appeared in primitive form and purpose during the Han dynasty in China around 206 BC, much later becoming the means of navigation, during the Song Dynasty, also in China. According to some data, the use of the compass in Western Europe and the Islamic world was recorded in the 12th century.

The answer is: b.

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                the united states presidential election of 1912 was the 32nd quadrennial presidential election, held on tuesday, november 5, 1912. the election was a rare four-way contest.

                incumbent president william howard taft was renominated by the republican party with the support of its conservative wing. after former president theodore roosevelt failed to receive the republican nomination, he called his own convention and created the progressive party (nicknamed the "bull moose party"). it nominated roosevelt and ran candidates for other offices in major states. democrat woodrow wilson was finally nominated on the 46th ballot of a contentious convention, to the support of william jennings bryan, the three-time democratic presidential candidate who still had a large and loyal following in 1912. eugene v. debs, running for a fourth time, was the nominee of the socialist party of america.

                wilson won the election, gaining a large majority in the electoral college and winning 42% of the popular vote, while roosevelt won 27%, taft 23% and debs 6%. wilson became the only elected president from the democratic party between 1892 and 1932, and the second of only two democrats to be elected president between 1860 and 1932. this was the last election in which a candidate who was not a republican or democrat came second in either the popular vote or the electoral college, and the first election in which all 48 states of the contiguous united states participated.

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-austint1414