Which of the following were contributions of shang dynasty craftspeople? silk making and bronze casting bronze casting and iron working jade carving and gold working stone sculpting and steel making

The right answer is "silk making and bronze casting".

Here a quick explanation:

Under the Shang dynasty, the Chinese built large cities with strong social class divisions, expanded irrigation systems, fabricated silk, and monopolized the use of bronze.

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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.