Answer: its b
Explanation: The bacterium that causes the bubonic plague is called yersinia pestis. It can survive in rodent populations and is spread to other mammals, including humans, through flea bites. ... The 1330s outbreak also spread west across Central Asia via traders using the Silk Road.
Slaves fled to Canada to gain freedom, so the Canadian population grew.
I want to say A a factory employs many workers doing different jobs to produce a car. Factories do mass producing
Answer:
D) Shift of population to urban centers
Explanation:
The changeover to an industrialized economy led to a "Shift of population to urban centers."
The industrialized economy results from industrialization, whereby most production involves applying machines to produce goods massively. This production process leads to factory settings where people were employed. This situation, in turn, led to urbanization and expanded the production and consumption of goods.
Hence, people moved from rural areas to urban areas for jobs and better lives.