Jeffries and Ryan argue that no-aid position drew support from a coalition of separationist opinion. Most important was "the pervasive secularism that came to dominate American public life," which sought to confine religion to a private sphere. Further, the ban against government aid to religious schools was supported before 1970 by most Protestants (and most Jews), who opposed aid to religious schools, which were mostly Catholic at the time. After 1980, however, anti-Catholic sentiment has diminished among mainline Protestants, and the crucial coalition of public secularists and Protestant churches has collapsed. While mainline Protestant denominations are more inclined towards strict separation of church and state, much evangelical opinion has now largely deserted that position. As a consequence, strict separationism is opposed today by members of many Protestant faiths, even perhaps eclipsing the opposition of Roman Catholics.[citation needed]
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What diminished after 1980?
Ah, so.. anti-Catholic sentiment

In 1886, Frank Julian Sprague invented the first practical DC motor, a non-sparking motor that maintained relatively constant speed under variable loads. Other Sprague electric inventions about this time greatly improved grid electric distribution (prior work done while employed by Thomas Edison), allowed power from electric motors to be returned to the electric grid, provided for electric distribution to trolleys via overhead wires and the trolley pole, and provided controls systems for electric operations. This allowed Sprague to use electric motors to invent the first electric trolley system in 188788 in Richmond VA, the electric elevator and control system in 1892, and the electric subway with independently powered centrally controlled cars, which were first installed in 1892 in Chicago by the South Side Elevated Railway where it became popularly known as the "L". Sprague's motor and related inventions led to an explosion of interest and use in electric motors for industry, while almost simultaneously another great inventor was developing its primary competitor, which would become much more widespread. The development of electric motors of acceptable efficiency was delayed for several decades by failure to recognize the extreme importance of a relatively small air gap between rotor and stator. Efficient designs have a comparatively small air gap. [a] The St. Louis motor, long used in classrooms to illustrate motor principles, is extremely inefficient for the same reason, as well as appearing nothing like a modern motor.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was the transportation advancement made impossible by Sprague's designs?
Ah, so.. unanswerable

USAF rank is divided between enlisted airmen, non-commissioned officers, and commissioned officers, and ranges from the enlisted Airman Basic (E-1) to the commissioned officer rank of General (O-10). Enlisted promotions are granted based on a combination of test scores, years of experience, and selection board approval while officer promotions are based on time-in-grade and a promotion selection board. Promotions among enlisted personnel and non-commissioned officers are generally designated by increasing numbers of insignia chevrons. Commissioned officer rank is designated by bars, oak leaves, a silver eagle, and anywhere from one to four stars (one to five stars in war-time).[citation needed]
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What groups is the USAF rank divided amoung?
Ah, so..
enlisted airmen, non-commissioned officers, and commissioned officers