After the Civil War, the United States went saw a <em>major transformation</em>, in which it transformed from being an agricultural society to an industrial one.
Many factors like the massive supplies of raw materials (like timber, iron ore, oil, and others), the development of new technology that made the tasks easier and faster, an important workforce constantly growing by the flow of immigrants, and a new breed of ruthless business leaders were fundamental into the major growth that manufacturing in that time and the following years.
Therefore, the correct answer is Manufacturing.
While Minister Josiah Strong backed expansionism by claiming it was God's Will, Senator Alfred Beveridge justified it by stating that the emerging businesses demanded imperialism and it was America´s destiny to bring trade, liberty, and civilization to benighted people.
Strong argued that it was America´s manifest destiny to acquire new lands in a race with the other nations to dominate the world and acquire the limited resources. Beveridge argued that the increased business abroad had made it necessary to protect investments overseas.
Britain and France, standing by their guarantee of Poland's<span>border, had declared war on Germany on September 3, 1939.</span>
Historians attempt to answer the history and what could have happened differently in life
The European forces race each other to assert arrive in Southeast Asia since they craved the land for its key area along the ocean courses to China and their wellsprings of tropical agribusiness, minerals, and oil.
The following are the three thought processes behind the European race for the provinces:
1. economic
2. socially/religious
3. politically/militarily