Answer:
b. a horizontal restraint of trade.
Explanation:
This would be an example of a horizontal restraint of trade. Horizontal restraint of trade is an agreement between competitors at the same level of distribution, producing similar goods for the purpose of fixing product price, bid rigging, market allocation, group boycotts or any other purpose that will influence the market to their favour and minimize competition between them.

The extermination of an entire targeted population is called genocide.
Hence the statement is true
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Japanese missions to Tang China were important because it enabled Chinese customs to spread to Japan. This would create cultural diffusion and and hopefully lead to uniformity.
Answer:
Cluster sampling
Explanation:
Cluster sampling is the sampling that has been used in the statistics. It is a natural sampling. This sampling has been done on the population that is naturally presented in the population. The population has been divided into clusters and groups then it has been done the random sample from the groups. This sampling method has been used especially in marketing. This sampling method has been used when a researcher does not get information about the whole population.
It has two types:
- Single-stage cluster sampling
- Two-stage cluster sampling