Select the correct answer.
During glass analysis, the disappearance of which line suggests that the refractive Index of the glass matches the refractive index of the
reference medium?
A refractive line
B. becke line
C. index line
D. pressure line

Which of the following developments during the 1780s produced the strongest calls for a new national constitution and government? a.disrespect and abuse toward americans by foreign powersb.political disputes between tories and whigsc.economic chaos in the nationod.failure of states to cooperate with congress