Answer:
B. Controversial weapons used by the United States in Vietnam (I think)
Explanation:
this would be a confederal system
your answer is D. sending out the Great White Fleet
Answer:
I think its True
Explanation:
Because a Astrolabe is an instrument formerly used to make astronomical measurements, typically of the altitudes of celestial bodies, and in navigation for calculating latitude, before the development of the sextant. In its basic form (known from classical times), it consists of a disk with the edge marked in degrees and a pivoted pointer.