Final answer:
Sierra Leone and Tanzania have different economies primarily because they have different natural resources, and their historical contexts, including the impact of colonialism and post-independence governance, have influenced their economic developments differently.
Step-by-step explanation:
The reason Sierra Leone and Tanzania have different economies is primarily due to D. They have different natural resources. Each country's economic status is profoundly influenced by the variety of resources available to them, how these resources are exploited, and the way they are integrated into the global economy. In addition, historical factors such as the legacy of colonialism, the structure of governance post-independence, and political stability play significant roles in shaping their economies.
While Sierra Leone is rich in minerals, including diamonds, its economy has been marred by political unrest. In contrast, Tanzania has leveraged its natural resources, including significant deposits of precious minerals like tanzanite, and invested in tourism attractions such as wildlife safaris, which contribute substantially to its economy.
Furthermore, both countries' economic direction was inhibited by the influence of colonialism, which set up systems that benefited the colonizers and left enduring economic challenges post-independence. Neither country is a Communist state, nor is apartheid a factor in Tanzania; thus, options A, B, and C are not correct.