Airplanes were vital for ww1 to ease transport of amo and soon guns on the planes including bombs this made it easier for to launch quick air strikes on places like bases vulnerable to air strikes
Answer:Towards china
Explanation:Kublai khan took over yuan dynasty
The Internal Combustion Engine was an invention of a British Engineer named Edward Butler in 1884. He was also the first person to use the word 'petrol' which we now know as petroleum or gas.