B) German reunification and the collapse of the soviet union
hope this helps
Drown their crops with salt water in order to kill their pests
Answer:
b. a replication with extension study
Explanation:
Janet's study is a replication with extension. In the study, Janet considered more factors compared to the previous research, she extended the scope of the study. It would have been a simple replicated study if nothing was altered or added, if it was exactly like the previous study.
As far as I know, it was the Chinese - there is evidence they had movable printing press as early as in 12th century.
In Europe the movable print was devised by Johannes Gutenberg in Germany, Mainz.
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