Problem: Currently, the army is divided into the Regular Army, the Army Reserve, and the Army National Guard. The army is also divided into major branches such as Air Defense Artillery, Infantry, Aviation, Signal Corps, Corps of Engineers, and Armor. Before 1903 members of the National Guard were considered state soldiers unless federalized (i.e., activated) by the President. Since the Militia Act of 1903 all National Guard soldiers have held dual status: as National Guardsmen under the authority of the governor of their state or territory and, when activated, as a reserve of the U.S. Army under the authority of the President.
What were National Guard members considered before 1903?
The answer is the following: state soldiers

Problem: The exodus of Salvadorans was a result of both economic and political problems. The largest immigration wave occurred as a result of the Salvadoran Civil War in the 1980s, in which 20–30% of El Salvador's population emigrated. About 50%, or up to 500,000 of those who escaped headed to the United States, which was already home to over 10,000 Salvadorans, making Salvadorans Americans the fourth-largest Hispanic and Latino American group, after the Mexican-American majority, stateside Puerto Ricans, and Cubans.
How many Salvadorans immigrated?
The answer is the following: 20–30% of El Salvador's population emigrated. About 50%, or up to 500,000 of those who escaped headed to the United States,

Problem: After the Council, Paul VI contributed in two ways to the continued growth of ecumenical dialogue. The separated brothers and sisters, as he called them, were not able to contribute to the Council as invited observers. After the Council, many of them took initiative to seek out their Catholic counterparts and the Pope in Rome, who welcomed such visits. But the Catholic Church itself recognized from the many previous ecumenical encounters, that much needed to be done within, to be an open partner for ecumenism. To those who are entrusted the highest and deepest truth and therefore, so Paul VI, believed that he had the most difficult part to communicate. Ecumenical dialogue, in the view of Paul VI, requires from a Catholic the whole person: one's entire reason, will, and heart. Paul VI, like Pius XII before him, was reluctant to give in on a lowest possible point. And yet, Paul felt compelled to admit his ardent Gospel-based desire to be everything to everybody and to help all people Being the successor of Peter, he felt the words of Christ, "Do you love me more" like a sharp knife penetrating to the marrow of his soul. These words meant to Paul VI love without limits, and they underscore the Church's fundamental approach to ecumenism.
In Paul VI's view what does the Catholic ecumenical dialogue require from someone?
The answer is the following: whole person

Problem: Infrared vibrational spectroscopy (see also near-infrared spectroscopy) is a technique that can be used to identify molecules by analysis of their constituent bonds. Each chemical bond in a molecule vibrates at a frequency characteristic of that bond. A group of atoms in a molecule (e.g., CH2) may have multiple modes of oscillation caused by the stretching and bending motions of the group as a whole. If an oscillation leads to a change in dipole in the molecule then it will absorb a photon that has the same frequency. The vibrational frequencies of most molecules correspond to the frequencies of infrared light. Typically, the technique is used to study organic compounds using light radiation from 4000–400 cm−1, the mid-infrared. A spectrum of all the frequencies of absorption in a sample is recorded. This can be used to gain information about the sample composition in terms of chemical groups present and also its purity (for example, a wet sample will show a broad O-H absorption around 3200 cm−1).
What do the vibrational frequencies of molecules usually correspond to?
The answer is the following:
the frequencies of infrared light