Problem: In 1842, which German socialist came to work in one of his father's mills, where sewing threads were made, in Weaste, Salford?
Answer: friedrich engels

Problem: The Rye House Plot was a plot against which king of England?
Answer: charles 2

Problem: Latvia has a maritime border to the west with what country?
Answer: sweden

Problem: What type of rock is carbonado?
Answer:
diamond