The first civilizations didnt use metal very often, but when they did it was usually for farming tools.
India was an excellent trading spot. Many merchants from different countries came and traded with Britain, which in turn brought Britain more money.
Because of the various technological and industrial advancement, there was huge growth of cities in America.
Explanation:
Many new possibilities if employment were opened in America which allowed many immigrants to occupy in order to have a better livelihood. Transatlantic railroad construction companies observed Asians to be the cheapest form of labor and many Chinese were employed in the construction of it. Urbanization in America led to the growth of busy commercial cities like Boston, New York and Philadelphia.
Textile mills and many sweat shops attracted the women workers too. Although, cities sprang up to be developed during the nineteenth century, it also paved way for many reform movements like labor union movements, women suffrage movements.
Well from the way I see it, if other countries were to get in on the holocaust it would just make it worse becuase then Germany would have to start a war with those countries and it would be a big mess and I’m sure other countries feared that something like that would possibly happen which is why they didn’t act upon it and if they did they would be causing problems for their own country which is what they didn’t need.