Students’ Questions about History Page 40

Justinian I failed to regain all of the former provinces of the old Roman Empire because of the cost of maintaining a large army and the difficulty of logistics in moving troops around the vast empire.

The most important factor in Hitler’s rise to power was his ability to tap into the German people’s sense of national pride and desire for strong leadership.

In literature, romanticism is a movement that emphasizes strong emotions, nature, and individuality.

Eratosthenes was a Greek mathematician, geographer, and astronomer who made many contributions to science. He was the first person to calculate the circumference of the Earth, and he also developed the first map of the world.

The ancient Greek civilization went to war with Troy after Troy refused to return Helen, the wife of the Greek king Menelaus, to her rightful husband.

The Vietnam War was fought from 1954 to 1975. It was a war between the communist North Vietnam, supported by its communist allies, and the non-communist South Vietnam, supported by the United States and other anti-communist countries.

The American Civil War was fought from 1861 to 1865, mainly in the Southern United States. The main cause of the war was the disagreement over the issue of slavery.

Nelson Mandela was an important leader in the struggle against apartheid in South Africa. He was also the country’s first black president, serving from 1994 to 1999.

They traded with the Egyptians, Mesopotamians, Phoenicians, and Persians.

A civil war is a war fought between different factions within the same country. It is distinguished from other types of war by its intensity and the number of casualties.