actually the answer is d.worked at challenging jobs in the cities.
Answer:
Technology has deeply affected the global economy and its usage has been linked to marketplace transformation, improved living standards and more robust international trade. ... Technological advances have significantly improved operations and lowered the cost of doing business.
Explanation:
I just searched it, easy.
Umm in 1911 the last dynasty the Qing (Ching) became the republic of China
