You did not list the options, but Title 9 is what required this across university campuses.
Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
The discovery of Gold caused people to start rushing to California.
The British conquered Myanmar, and the French conquered Laos, Cambodia, and Vietnam in the the 1800's and 1900's, and the conquerors always leave some of their culture behind. Hope this helps. Good luck!