The Mongol Empire existed during the 13th and 14th centuries and it is recognized as being the largest contiguous land empire in history.
What are the options? I cannot tell you the answer unless I can see the options.
Answer:
"The lure of new, high-paying, high-skill manufacturing jobs"
Explanation:
Towards the end of the 1800s, the United States of American economy moved or transitioned away from agriculture to an industrial economy.
It's evident through many railroad construction and the western territory expansion which led to more jobs, business, and manufacturing of goods.
Two inventions from the World War two are the radar and the sonar, both of which had a huge impact in the war, but also after it, becoming a widely used devices all over the world.
The radar was an invention that was enabling detection of objects in the air. Initially it is was used for detection of planes, as that's where the biggest threat was coming. This device enabled the soldiers and the civilians to be warned about the oncoming danger, but also to be able to respond adequately to the threat.
The sonar was another invention inspired by the war. It had the same basic purpose as the radar, just that it was used for detecting objects in the water. This was a crucial instrument that gave the submarines big advantage in locating the enemy and destroying it, or if not capable of that, being able to move away and avoid it.
