266.B "The eighteenth century was the golden age of English glass:"
267.A. "Glassmakers were discouraged from emigrating because if English-quality glass were produced in the colonies the home industry would have been threatened."
268.B
269.C
270.A "a considerable initial investment in a large facility and a team of skilled workers." "....availability of fuel and raw materials of..."
271.C. "...that most of the colonial glass factories lasted only a short time."
272.D
273.B "Pennsylvania's first glasshouse was conceived in 1682 as part of the economic plan of the settlement of Philadelphia."
