Why was the economy of the North less dependent on slave labor than that of the South

What event was one of the greatest factors that led to massive emigration from ireland to the united states in the mid—1800s

Janette goes into an electronics superstore to buy a new computer. the salesperson works with her to find the right model, and she agrees to buy a new computer for $500 and a floor-model 18-inch monitor for $100. just when she is ready to pay, the salesperson walks away for a minute and then comes back to inform her that the monitor she was ready to purchase can't be sold for < $125. she agrees to the extra $25 even though they had initially agreed on the $100 selling price. janette has fallen for the technique of gaining compliance.

According to the theory of mercantilism, a country is strengthen by