Why was the development of zero an important advancement in math? A. Zero could be used to create integers.
B. Zero was used to represent a large value.
C. Zero could be used as a placeholder or to write larger numbers.
D. Zero was used by Indian astronomers to calculate the sizes of stars.
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American reaction to the 9/11 tragedy can be characterized as patriotism. a. true b. false

What event brought rwanda to the worlds attention in 1994?

This table shows the number of cities in north carolina from 1860 to 1910. which factor was responsible for the change in population from 1860 to 1910? a. the expansion of railroad lines cities grow. b. the growth of farms brought workers into the state. c. the civil war resulted in residents leaving the state. d. the rise of corruption led many residents to leave cities.