Singapore
According to the CIA World Fact Book the United States of America has been the world's largest food donor since the mid twentieth century.
Jupiter, since it by far the largest and most massive.
Algeria. Sudan was formerly the largest, but since South Sudan's independence in 2011, it has fallen to third place.
The USA is a country-- USA stands for United States of America. Since it already is a country, it has no other country in it. It does have states in it (50 states) and the largest state in terms of its area is Alaska; the largest state in population is California.
The Soviet Union.
If this question were asked before 2011, it would be answerable. At that time, Sudan was the largest country in Africa, making ALGERIA the second largest country in Africa and since Algeria is on the Mediterranean Sea, it would satisfy both conditions.In 2011, Sudan broke into Sudan and South Sudan. This meant that Algeria became the largest country in Africa and the second-largest became the Democratic Republic of the Congo, which is nowhere near the Mediterranean. As a result, currently, there is no country that is both (1) the second-largest country in Africa AND (2) a country on the Mediterranean Sea.
china. But likely india will have more people since Cina has the 1 baby rule
By area, they're all equal and tied for last, since there are no countries in Antarctica.
Lausanne, Switzerland's fifth largest city, has been designated as the Olympics capital since 1915.
If the question is asking "Which Spanish-speaking country has the largest Jewish population today?", the answer is Argentina with roughly 200,000 Jews. If the question is asking, "Which Spanish-speaking country historically had the largest percentage of Jews?", the answer would be Spain since Spain had a large Jewish population in 1490.
In the US, Lake Superior is the largest lake. Lake Michigan is the largest lake that is actually in the US. Lake Superior is larger but it's impossible to credit it as largest since a good deal of it is in Another Country, namely Canada.
I think you may be talking about income tax deductions, possibly. These actually aren't "without cost to the donor', since the deduction applies to income, not the amount of tax due. It does mean that giving a charity $100 may only "cost" the donor $80 or so in the long run, since otherwise the donor would have been required to pay taxes on the $100.