4 2 5 i’m sorry if wrong that’s what i think the answers are
Assembly Production Lines.
Ford learned from the meatpacking industry and gave each employee a discreet task along an assembly line that enabled the job to get done faster.
The correct answer is letter A
Explanation: The discovery Christopher Columbus was important because it led to the colonization of the Americas. He thought he had arrived in India, that was his object. But when he arrived there he met natives who were very obedient and docile.
The correct answer is Austria-Hungary
Nationalism started rising after numerous years of wars during the 19th century. Austria-Hungary believed that it had the right to be the great empire that it used to be and that it partially was at the moment. That's why things like world war 1 happened since countries wanted to establish themselves as great.