That really depends on the definition of a "computer". The usual story that computer scientists learn in their introductions is Charles Babbage, who devised a "Difference Machine" to count polynomials, which however, was not yet constructed in his time.
Another "first" was Konrad Zuse's finished in 1938, which was the first programmable computer.
Three of the factors in Russia which fostered the revolution of 1917 were the impoverishment of the peasants who struggled to survive on their small plots of land and to pay the debts they owed to buy their land after the serf system was changed; many peasants who couldn't make a go of it fled to the cities and took part in the local industrial revolution but were oppressed by inadequate wages and poor working conditions and lastly WWI resulted in the poor masses in Russia being used as canon fodder in an unjust imperialist war to divide up the world differently unlike WWII which was to end the Nazi tyrrany.
In this case, any value given up by not choosing to
<span> spend or save the money is the "opportunity cost", because the money </span>could be spent elsewhere. "trade offs" and opportunity costs are very similar though in economics.
The answer is the 1st one. Hope it helps :)
