What "explosive situation" does mr. herrick claim motivated the school to suspend students for wearing armbands

In the year 1965 three students were expelled from the school because they wore arm bands as they were protesting against the United States that was involved in the war of Vietnam because one student also got killed in this war.

After this situation, students stopped wearing the arm bands. In the year 1969 the supreme court of the United states made an amendment that the schools could not violate the freedom of speech of the students.

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.