Answer: a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
Explanation:
Answer:
D. because it was created after the depression.
Explanation:
Answer: Prince Vladimir arranged mass baptisms in Kiev. :Princess Olga converted to Roman Catholicism and : Missionaries from Constantinople came to Russia.
Explanation:
It depends on what you think and your opinion