Answer:
a.
Spencer and Social Darwinists represent the evolutionary approach to social change.
Explanation:
As in nature, the stronger countries and nations prevail and dominate the weaker, which are inferior and not so smart and able as the strong ones, Social Darwinists argue.
A letter from a soldier who fought in the Napoleonic Wars is considered a primary source.
Your answer is:
Egyptian hieroglyphs were the formal writing system used in Ancient Egypt.