The model that describes how data is written to a blockchain is the: append-only data structure.
<h3>What is an Append-only Data Structure?</h3>
Append-only is computer data storage property whereby new data can be added to a blockchain, like an additional block, in a time-ordered sequential order in such a way that the data added cannot be easily altered as al data are permanently stored across all nodes.
The append-only data structure makes data stored almost immutable. This is the model in which the blockchain technology is built on.
Therefore, the model that describes how data is written to a blockchain is the: append-only data structure.
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Answer: C. Industrialization created factory jobs in urban areas while eliminating agricultural jobs in rural areas.
Explanation:
In the late 19th century, industrialization was in full swing and technology was being created that made farming more efficient. This led to a loss of jobs for people in the rural areas who depended mostly on farming.
These people then had to move to urban areas where industrialization had led to the construction of factories that required more labor. This significantly increased rural to urban migration.
1 million + 5 million equals 6 million
