In a low-income household in the developed world, more than 30% of a woman's income typically goes toward child care. This is because Children are (and must be) the top priority for mothers in every household, therefore mothers need to make sure the children are taken care of by buying them all the necessities. This is a large portion of the income in the household but becomes even bigger (roughly 30%) when dealing with a low income household.
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Constantinople had not fallen to the Turks in 1453 it can be presumed that the city would have proven to be a thorn in their side (and Russia’s) for centuries to come. The city controlled the access to the Mediterranean from the Black Sea and it would have been able to make both countries bend to its will simply to use the Dardanelles