What event in 1956 threatened the flow of middle eastern oil to europe? a. hungarian revolt b. khrushchev's becoming leader of the ussr c. the launch of sputnik d. the suez canal crisis

The correct option is "the Suez Canal Crisis"

The Sinai War, also called Suez Crisis, or Suez War, was a military war fought over Egyptian territory in 1956, which involved the military alliance formed by the United Kingdom, France and Israel against Egypt with the support in greater or lesser measure of the countries that currently make up the Arab League, of which some support was testimonial because they did not participate.

The Suez Canal, financed by France and Egypt, began operations in 1869, and quickly became a vital link between the United Kingdom and its most important colony, British India. Given this relevance, the United Kingdom bought its share from the Egyptian Government. The canal retained its importance even after the independence of India, since it became the main route to transport oil from the Persian Gulf to Europe, which was vital for all Western European economies.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.