Answer:
Despite geographical barriers, some African states were able to maintain diplomatic and cultural contacts with the broader Afro-Eurasian world.
Explanation:
The continuity of the diplomatic relationships allow trade during 1200-1450 which help the development of what is known as the Swahili coast market.
This Market integrated the following countries:
Kenya, Tanzania, Mozambique, Somalia, Comoros.
The trade had the following dynamic, African countries would sell gold, ivory, species and the Arabs, would sell finished products from china and species from India.
This trade with eurasia was vital in this period to develop the african nations.
Inventor and entrepreneur Sarah E. Goode was the first African-American woman to be granted a patent by the U.S. Patent and Trademark Office, for her invention of a folding cabinet bed in 1885. She died in 1905. ((Her invention of folding a cabinet bed))
US economic influence in other countries led to -cultural- diffusion.
Yes, it is true that Japan seized Pacific islands to boost its economy and trade, since Japan lacked many natural resources of its own, due to the fact that it is a small island.
