31. The Astronomer who first placed the sun at the center of the universe was:
A. Tycho Brache
B. John Harvey
C. Johannes Kepler
D. Nicolas Copemicus
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Nicholas Copernicus was the Astronomer who first placed the sun at the center

D. Nicholas Copernicus

This secretive astronomer devoted his entire life to sun-centered cosmic theories as larger questions of faith were dividing Europe nearly 500 years ago.

- NatGeo

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.