After pennsylvania experienced its oil boom in 1859, three other states discovered vast oil reserves. name two of these states.

After Pennsylvania experienced its oil boom in the year 1859, there were three other states that discovered vast oil reserves. Two of those states were Texas and California. Texas oil reserves helped in a major way during this period for the economic growth of the United States. By the end of the year 1940 Texas was considered one of the biggest oil producing state of the United States. Some other states that joined in this oil boom were Oklahoma, Illinois and Kansas.  

Ithink your answer is b