The answer is A. Cuba
That’s what the answer was on my test
The Byzantines spread Christianity mostly by sending out missionaries for the Greek Orthodox Church.
Answer:
China launched associate offensive in response to Vietnam's invasion and occupation of Asian nation in 1978 (which terminated the rule of the Chinese-backed Khmer Rouge). Chinese forces entered northern Vietnam and captured many cities close to the border
The appropriate answer is B. steam boats could travel against the current on a river. This statement means that steam boats could travel upstream. The steam engine in steam boats allowed them to travel upstream possibly against a strong current. Sail boats rely on wind or the downstream flow of the water to move it from one location to the other. The invention of the steamboat revolutionised transportation of goods and people on large navigable rivers.