The correct answer is narratives.
That is the only correct answer among these because narratives tell very lengthy stories about certain events. Narratives aren't exactly poems, but they aren't prose either - they are something in between, which perfectly describes the Iliad and the Odyssey. Dramas and plays are the same thing, and they aren't any poems - they are epic/narrative poems.
Outer planets are called gas giants. Outer planets have a high gravity.
Eisenhower deployed the 101st Airborne Division to Little Rock to protect the African American students. The Supreme Court had just ruled segregated schools unconstitutional, but the Governor of the area had ordered for the National Guard to prevent the students from entering. Eisenhower wanted to make sure the court ruling was upheld.<span />
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need.