Which of the following contributed to the increased economic and military power of the Sumenians?

(1 point)
Cause
Effect
increased economic and military power
:: a standing army of many trained soldiers :: the formation of alliances with other city-states

" a series of highly strategic army leaders
# the development of bronze to make weapons

The correct answer is "the development of bronze to make weapons." The use of bronze weapons would have greatly increased the military power of the Sumerians, as bronze was a stronger and more durable material than previous weapons made of stone or wood. This advancement in military technology would have allowed the Sumerians to defend and expand their territories more effectively.