How did charles william siemens influence the second industrial revolution? a. his system of hiring only skilled workers led to greater production. b. his skyscrapers changed building methods throughout europe. c. his use of petroleum to power machines led to changes in many industries. d. his method for producing steel in large quantities allowed it to be used on a massive scale.

D. His method for producing steel in large quantities allowed it to be used on a massive scale.

Explanation:

Sir Charles William Siemens built up his regenerative furnace  during the 1850s, for which he asserted in 1857 to ready to recuperate enough warmth to spare 70–80% of the fuel. The furnace worked at a high temperature by utilizing regenerative preheating of fuel and air for combustion. Through this strategy, an open-hearth furnace can achieve temperatures sufficiently high to melt steel.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

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