Helios threatened to not shine anymore.
Technically Helios threatened to only shine in Hades, among the dead. However, this is the most similar to what happened in the legend. Therefore it is most likely the correct answer.
The extremist Islamic groups mentioned as well as others, have different motives that drive them to act the way they do. There is in fact a common one: religion. Islamic groups follow the ideas presented on the Quran and have Allah as their one and only God.
Islamic extremist groups are known to call themselves "holy warriors" and they seek B. creating a government based on religion. Of course, each groups has its own ideology and its own motive, but religion is the one motive that extremist Islamic groups share.
Verticle and horizontal integration basically just gave companies more control over more parts of their product. For example, instead of only owning the plant that say produced cars, the company would also own the mines where they got the metal to make the cars and they would own everything from the raw materials to the final product. It could also edge out competition leading to a powerful monopoly.
Yellow Journalism by American Journalists