Answer:
The answer to your question is D) Chemical refining of petroleum
Generally considered to be the first great war of the 20th century, the conflict saw Russia and Japan – the two dominant nations in north-east Asia – battle for control over Korea and Manchuria.
<span>But why did the war break out, and what is its historical significance? Here, Dr Philip Towle from the University of Cambridge tells you everything you need to know about the conflict.</span>
<span>Piaget's theory
of development assumed that all children pass through a series of four
universal stages in a fixed order from birth to adolescence. these are sensorimotor, preoperational, concrete operational, and formal operational. <span>These
stages are determined by an observable neurological development that
allows children to acquire diverse and more advanced thought processes.
I hope my answer can help you.
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Huminids were humans at the Paleolithic Era. They made artifacts. A weapon, a tool, or a pot can be an artifact.
