What famous metal that was plentiful in nubia, is still used to make jewelry today

"people are the greatest resource that a country has". justify.

Japan’s key exports to africa and southwest asia are mostly a) raw materials. b) human capital. c) manufactured items. d) agricultural products.

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.