I'll do you even better, I'll give you at least 5 or 6 reasons.
1. Rise of Al Qaeda (Founded in 1988 and funded during the Iraqi war by several nations including Saudi Arabia to bring down Shia government there)
2. U.S intervention is several nations causes outburst of common folk who join Al Qaeda.
3. Al Qaeda becomes involved with other groups who are now starting to form.
4. Syrian war intervention by the U.S, several other allied nations and Russia start several groups, that of which was once apart of Al Qaeda, the Islamic State of Iraq and Syria.
5. Progress in illegal trade, alignment with other groups and production of weapons compensates these groups.
6. The usage of speeches presented by the likes of demagogues as well as force recruitment and evening kidnapping gain more members to the cause.
Answer: C-focused on mining and agriculture
Explanation:
As the early Americans adhered to the Manifest Destiny and expanded to the Western part of the Continent, they engaged in different activities from their Northwestern counterparts.
The territories that the Americans took over to the west had fertile land for agriculture as well as rich mineral deposits which led to minning. This often put them at loggerheads with the Native Americans and differentiated them from the North Eastern states which were more industrialized.