What is the most important way technological innovations changed agriculture during the second half of the nineteenth century?
a. farmers were able to stop using fertilizers on their fields.
b. new equipment allowed different crops to be grown for the first time.
c. more efficient farms were able to produce more crops with fewer workers.
d. new equipment meant that natural events like droughts were not a concern.

the china one is last

explanation:

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.