There are many similarities and differences between the economies of chile and Venezuela, but perhaps the most significant would be that the former focussed mostly on agricultural exports.
controlling the Solomon island would protect Australia, is the reason among the choices given in the question to why many of the first island hopping battles in 1942 take take place in the Solomon islands Solomon island were close to pear harbor and midway. capturing the Solomon island would put allies bombers in striking range of Japan
Social Darwinism explained the operation of society as "survival of the fittest."
People often associate the term "survival of the fittest" with Charles Darwin, but actually it was terminology that came from Herbert Spencer, the founder of what is known as Social Darwinism. (Spencer wouldn't have called it that - he and Darwin were rivals.) Darwin used the term "natural selection" in his descriptions of biological evolution. Spencer was unafraid to apply the same concepts to competition within the human species, contending that the stronger, fitter social or cultural groups will survive better than others and dominate over weaker groups.