Which of the following contribute to the increase economic and military power of the sumerians

1. Agricultural advancements: The Sumerians were among the first civilizations to develop advanced agricultural techniques, such as irrigation systems and crop rotation. This led to a surplus of food, allowing them to support a larger population and expand their territory.

2. Trade networks: The Sumerians established extensive trade networks with surrounding regions, allowing them to exchange goods and resources with other civilizations. This increased their wealth and access to valuable resources.

3. Military technology: The Sumerians developed innovative military technology, such as chariots and bronze weapons, which gave them a significant advantage in warfare. This allowed them to expand their territory and exert control over surrounding regions.

4. Strategic alliances: The Sumerians formed alliances with other city-states in the region, allowing them to cooperate in military campaigns and pool their resources for mutual benefit. This increased their overall military power and influence in the region.