Answer:
Description 1: "This need grew with the growth of the population" -: Skilled workers
Description 2: "Largest group of immigrants" -: Slaves
Explanation:
In the United States or Western Hemisphere contest, it is widely known that aside from European colonists or settlers, the largest group of immigrants are the slaves, which was a result of the majorly trans-Atlantic slave trade from West African territory.
On the other hand, in the process of developing the region of the United States and Western Hemisphere generally, there is a need for skilled workers in the industrial sectors of the country. For example infrastructural development, health care system, etc.
Hence, the correct answer in this case is:
Description 1: "This need grew with the growth of the population" -: Skilled workers
Description 2: "Largest group of immigrants" -: Slaves
The Silk Road passed through 43 countries
The pros were that you were being protected by the guild in case of something bad happening you like getting hurt or similar. They would help you and your family for example. The cons were that you wouldn't be able to dictate the price of your wares which was done to prevent exploitation of consumers, so even if you were in a position to establish a personal monopoly, you couldn't and you couldn't become richer than what is the adequate wealth for a merchant.