Black Death was spread mainly through the fleas on rats. Fleas would bite the infected rat, then jump onto humans, biting them and causing them to become infected. Rats were mostly found on ships than running around on land
Cities are liable to occasional depressions of trade, resulting from over production, or the successful rivalry of foreign nations, or even portions of the same country; or there are smashings of banks, and commercial panics, and periods of general<span> mistrust.</span>
They received most parts of what is now canada
Because the middle class grew substantially and urbanization started.