No country would mess with South America. As that was what the Monroe Doctrine was it said that the US would protect South America from Europe
In general, yes, immigration during 1830s to 1840s was vital to the industrialization of America, since it was mostly immigrants who first sought employment in the factories that were an essential element of industrialization.
The medieval guilds were generally one of two types: merchant guilds or craft guilds. Merchant guilds were associations of all or most of the merchants in a particular town or city; these men might be local or long-distance traders, wholesale or retail sellers, and might deal in various categories of goods.
