3. the mckinley tariff of 1980 provoked crisis by eliminating the duty - free status of Hawaiian sugar. as a result, Hawaiian sugar growers faced competition in the american market. american planters in hawaii called for the U.S. to annex the islands so they wouldn't have to pay the duty.
4. Over population says it all: harder to find jobs, more mouths to feed...
Overpopulation can result from an increase in births, a decline in mortality rates, an increase in immigration, or an unsustainable biome and depletion of resources. It is possible for very sparsely populated areas to be overpopulated if the area has a meagre or non-existent capability to sustain life (e.g. a desert). Advocates of population moderation cite issues like quality of life, carrying capacity, and risk of starvation as a basis to argue for population decline. Scientists suggest that the human impact on the environmentas a result of overpopulation, profligate consumption and proliferation of technology has pushed the planet into a new geological epoch known as the Anthropocene.