Answer:
B. horses and cattle went from the Americas to Africa.
Explanation:
Because they might've taken out their leader, but if our president was killed, would America grind to a halt? No, someone took his place, like the vice president would take the president's.
B. Ecosystem because there abiotic and biotic things.
Answer:
The evacuation boosted morale
Explanation:
If the BEF had been captured, it would have meant the loss of Britain's only trained troops and the collapse of the Allied cause. The successful evacuation was a great boost to civilian morale, and created the 'Dunkirk spirit' which helped Britain to fight on in the summer of 1940.