When did oil become a valuable resource?

How much water do you use in a lifetime? Why a country wants more immigrants then emigrints? Why were Americans divided in support for the mexcan American war? What are Soil water forests oil iron and coal are all examples of? What kind of livelihood is typical in coastal areas? How many people were injured during the lituya bay tsunami? Did Cesar cheves break any laws? Your ex keeps disclosing information to you about his wife being physically and verbally abusive him and also includes small children and he thinks he is protecting the kids by staying? How old can a lion live to? What type of conflict is in the book homeless bird? Why do we need to protect and conserve the environment? Why has there been a decline in state- mandated caste system? What are the cause and effects of unions? What are reasons for the rise of the symmetrical family? What countries still have slavery? How much does does electricity cost per kilowatt from Avista? What role did the Black churches play in organizing the Civil Rights Movement for blacks in the Us? Did malala achieve her goal of fight for girls rights of going to schools? Feminist betty friedan's manifesto the feminine mystique was aimed primarily at reviving labor militancy among working-class women in factories and shops? How would you raise a health and safety issue with designated persons in the workplace?