Final answer:
Land-based empires developed and expanded through military conquest, trade, and the need for resources. The shift to overseas empires allowed nations to access new resources, expand trade networks, and exert political control over distant territories.
Step-by-step explanation:
The development and expansion of various land-based empires can be attributed to factors such as military conquest, trade, and the need for resources. For example, the Roman Empire expanded through military campaigns and trade, while the Mongol Empire expanded through conquest. These empires increased their influence through the establishment of colonies, tribute systems, and the assimilation of conquered peoples.
The shift from land-based to overseas empires was a significant change because it allowed nations to access new resources, expand trade networks, and exert political control over distant territories. This change affected history by leading to the Age of Exploration, the spread of European culture and influence around the world, and the eventual colonization of much of Africa, Asia, and the Americas by European powers.