Which country in africa has the following characteristics?
i. it has an emerging market economy.
ii. it is the wealthiest country in africa.
iii. it has a history of racial segregation.

a. libya
b. egypt
c. south africa
d. nigeria

The third answer is true (C).

South Africa is a country situated on the southern tip of the African continent and is bathed by the Atlantic and Indian Oceans. It is the richest country on the continent, with a high index of human development, many natural resources and an economy based on mining and the chemical, steel and other industries.

The country is marginally black, 70%, and at the time of its independence, in 1931, it experienced a legally institutionalized racial segregation regime, which became known as apartheid, in which the privileged white minority controlled the black majority.

The segregation regime lasted until the 1990s, when the first multi-party elections took place, electing Nelson Mandela in 1993 as the country's first black president. Mandela received the Nobel Peace Prize for his efforts against the apartheid regime.

i truly dont know the answer wait i do its 1,3,4

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)