1.
what effect did john hay's open door policy letters have on the imperial powers of britain, france, germany, russia and japan?
a) it provoked powers to declare war on the united states.

b) it caused the imperial powers to restrict trade in their trade with china.

c) it warned the imperial powers that the united states would soon declare war on china.

d) it signaled to those powers that the united states would take a larger role in world affairs than before.

1.a)britain

2.b)spain

3.c)french

4.d)portugal

explanation:

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.