Answer:
The Industrial Revolution sweeping across Europe and America in the late 18th century.
Explanation:
Well in the case of the Mongols for example, being nomadic meant that their armies were highly mobile and adaptable. Conquests and long distance travel to conquer a civilization wasn't as difficult because it suited their nomadic lifestyle. They often adapted certain military technologies from the civilizations they conquered as well.
Tens of thousands of women joined The Women's Land Army to work the soil, fields, and orchards to free men for military service. Women took to the land gladly and brought in the harvest during the war years to supply food to the nation, the military, and our allies.
