It was the "Open Door Policy" that was the name of the trading policy that Secretary of State John Hay initiated with China and the European nations that already had a presence there, since the US wanted to benefit from trade with China as well.
<span>d. the unity of the African tribal groups
The unity of African tribal groups would not have changed the actions of the american colonies in buying slaves
hope this helps</span>
Answer:
D. Lower birthrate
Explanation:
The graph shows more old people than young people which is most easily explained by lower birth rates.
This might be confusing because of the Black plague but that was only between 1346-1353
hope this helps :)
The two word term would be Power vacuum.
Explanation:
A power vacuum is what happens when there is sudden loss of authority in the governance and there is no potent replacement of it in sight.
This is usually what happens after the death of a long reigning dictator or a strong leader who had held the country so that there was no other alternative ready.
So the stability of their governance leads no potent alternative and makes a power vacuum in the nation.
The power vacuum will be the void of no strong leadership here.