Which bronze age technological advancement allowed farmers to grow crops further away from natural water sources?

a. irrigation
b. wheeled carts
c. balance scales
d. metal plows

The correct answer is A. Irrigation.

Explanation:

Irrigation is the process of digging man-made canals and ditches in order to divert water from natural sources such as rivers, and direct it towards fields and crops or to form artificial lakes in order to use the water later.

Irrigation allowed farmers to grow crops far from natural water sources, giving way to food surplus.

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.