The answer is D I looked it up
They all stopped liking Eachother
The oldest and best-preserved Swahili hamlet is Lamu Old Town, which is situated on a small island. Aksum, also known as Axum, was a significant kingdom in early Christian Ethiopia. About 30 miles make up the Great Zimbabwe National Monument.
What is public service announcement?
A public service announcement (PSA) is a brief message that is broadcast on radio, television, and print media to increase awareness of an issue and alter attitudes or opinions in the public's best interest.
Lamu PSA related on social and cultural integrity, Aksum PSA related on saved spices, fabric and animals saving. Hill Ruins, valley Ruins and royal movement on PSA.
As a result, Lamu Old Town, Aksum, Great Zimbabwe National Monument these sites and picture.
Learn more about on public service announcement, here:
brainly.com/question/8103635
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The modern development of today's world would have first made the routes safer. Today we have the safety of common things such as police officers, hospitals, e.t.c. Transportation of goods would have been easier, and it would have been easier to carry larger amounts of goods at one time.
hope this helps :)