Answer:
Telegraph is what people used to coomunicate to people in the 19th century
Explanation:
Yup it’s d ( have to ajbejsnsns)
He reformed the government of Rome and was extremely successful on the battlefield. Under Severus, the Roman Empire reached its greatest extent and he successfully founded a dynasty. ... Severus created a 'military monarchy', marginalized the Senate and his expansion of the army weakened the economy.
B. He is the father of the public library, and c and d