Because Slate was more common in wet microclimates.
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Answer:
As labor is divided amongst workers, workers are able to focus on a few or even one task. The more they focus on one task, the more efficient they become at this task, which means that less time and less money is involved in producing a good.
Explanation:
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Answer: A) students' rights to free speech
Explanation:
In 1965, Mary Beth Tinker, a 13-year-old high school student, <u>protested against the War in Vietnam by wearing a black armband. </u>
As a sanction, she was prohibited from wearing the armband by school officials and she also got a suspension, together with her brother and another student. When the students came back to school, they didn't wear armbands anymore, but they were dressed in black for the rest of the school year.
The case was brought before the court by the ACLU (American Civil Liberties Union). The Supreme Court ruled that students are allowed freedom of expression at school, provided that it doesn't damage the educational process.
The oil boom in Texas brought about dramatic changes in the economy during the period of late 1800s and early 1900s.
Explanation:
- The oil boom of which was also called gusher age brought about several economic changes.
- The discovery of huge oil reserves bought rapid industrialization, with the turn of century urbanization was seen with new corporations and new infrastructures being built to keep pace with the ushering oil business.
- After the end of World War 2, the state was industrialized, amongst which Houston was the one to be most benefited in this boom, having the largest reserves of natural oil. This period brought significant changes in the commercial makeover of Texas.
- During the end of 18th centuy and beginning of early 19th century, started with the Oil era in Texas, having opened the first oil field in Corsicana in 1894
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