Here is a question about this article: Certain technological inventions of the period whether of Arab or Chinese origin, or unique European innovations were to have great influence on political and social developments, in particular gunpowder, the printing press and the compass. The introduction of gunpowder to the field of battle affected not only military organisation, but helped advance the nation state. Gutenberg's movable type printing press made possible not only the Reformation, but also a dissemination of knowledge that would lead to a gradually more egalitarian society. The compass, along with other innovations such as the cross-staff, the mariner's astrolabe, and advances in shipbuilding, enabled the navigation of the World Oceans, and the early phases of colonialism. Other inventions had a greater impact on everyday life, such as eyeglasses and the weight-driven clock.
What is the answer to this question: Which invention with military applications helped bring about the nation state?
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So... gunpowder

Here is a question about this article: The Fed then raised the Fed funds rate significantly between July 2004 and July 2006. This contributed to an increase in 1-year and 5-year adjustable-rate mortgage (ARM) rates, making ARM interest rate resets more expensive for homeowners. This may have also contributed to the deflating of the housing bubble, as asset prices generally move inversely to interest rates, and it became riskier to speculate in housing. U.S. housing and financial assets dramatically declined in value after the housing bubble burst.
What is the answer to this question: When did the Fed begin raising Fed funds rate significantly?
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So... July 2004

Here is a question about this article: The first legal steps taken to end the occurrence of child labour was enacted more than fifty years ago. In 1966, the nation adopted the UN General Assembly of the International Covenant on Economic, Social and Cultural Rights. This act legally limited the minimum age for when children could start work at the age of 14. But 23 years later in 1989 the Convention on the Rights of Children was adopted and helped to reduce the exploitation of children and demanded safe working environments. They all worked towards the goal of ending the most problematic forms of child labour.
What is the answer to this question: What did this act due?
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So...
legally limited the minimum age for when children could start work at the age of 14