Energy.
The Second Industrial Revolution<span>, also known as the </span>Technological Revolution,<span>was a phase of rapid industrialization in the final third of the 19th century and the beginning of the 20th. The First </span>Industrial Revolution<span>, which ended in the early-mid 1800s, was punctuated by a slowdown in macroinventions before the Second Industrial Revolution in 1870.</span>
Answer: Land
Explanation:
Economic factors of production are needed in the production process to turn raw goods to finished goods. There are four factors of production being; <em>Land, Labor, Capital, </em>and<em> Entrepreneurship</em>.
The relevant factor here is land. Land involves every natural resource that goes into the production process including as the term suggests, the land (real estate).
The real estate that Ray Kroc acquires before building the restaurant falls under Land as a factor of production.