Oklahoma could be divided into four momentous periods. The first period is during the early 1900s after Indian and white settlement which is also called as the Golden era due to the high ratios allocated to land, labour, and capital by prime production. During this period, the population soared from 790,000 in 1900 to 2396000 in 1930 resulting in the employment growth. Although agriculture was the key economic activity, the mining (oil and gas) and a series of oil fields were opened. This helped to stabilize the economy along with catering to the demands of the urban areas in both oil and agricultural fields. The oil field attracted investors which not only led to more jobs but also people business avenues to meet the needs of the increased population. Thus, oil industry not only helped to stabilize the economy but also contributed to economic growth.