9.) The Bessemer Process:
a. enabled Henry Ford to mass produce the Model T.
b. directly gave rise to the petroleum industry.

c. led to the end of railroads and initiated the creation of airplanes. p-
d. converted iron into a much more durable and versatile steel by blowing air through molten iron to

burn out the impurities.

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.