Problem: Israel:

In 1211, the Jewish community in the country was strengthened by the arrival of a group headed by over 300 rabbis from France and England, among them Rabbi Samson ben Abraham of Sens. Nachmanides, the 13th-century Spanish rabbi and recognised leader of Jewry greatly praised the land of Israel and viewed its settlement as a positive commandment incumbent on all Jews. He wrote "If the gentiles wish to make peace, we shall make peace and leave them on clear terms; but as for the land, we shall not leave it in their hands, nor in the hands of any nation, not in any generation."

When was the Jewish community strengthened by rabbis?
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A: 1211

Problem: European Central Bank:

This changed with the recent sovereign-debt crisis. The ECB always could, and through the late summer of 2011 did, purchase bonds issued by the weaker states even though it assumes, in doing so, the risk of a deteriorating balance sheet. ECB buying focused primarily on Spanish and Italian debt. Certain techniques can minimise the impact. Purchases of Italian bonds by the central bank, for example, were intended to dampen international speculation and strengthen portfolios in the private sector and also the central bank.

What was something used to minimize the impact of the soverign-debt crisis?
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A: Purchases of Italian bonds by the central bank

Problem: United States Army:

The task of organizing the U.S. Army commenced in 1775. In the first one hundred years of its existence, the United States Army was maintained as a small peacetime force to man permanent forts and perform other non-wartime duties such as engineering and construction works. During times of war, the U.S. Army was augmented by the much larger United States Volunteers which were raised independently by various state governments. States also maintained full-time militias which could also be called into the service of the army.

What is also called into the service of the Navy?
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A: unanswerable

Problem: Computer:

The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components but since the mid-1970s CPUs have typically been constructed on a single integrated circuit called a microprocessor.

Since when have CPUs been constructed with a microprocessor?
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A:
mid-1970s