Answer:
The reason why we need a system of currency exchange in order to conduct international trade is because different countries use different types of currency. They do so because national sovereignty allows each nation to establish its own currency. However, we need a system to pay for goods that are purchased from other countries. This is why the currency exchange system allows us to conduct international trade
Explanation:
1921 belongs to time where the juridical base was formed as a result to demands of the growing economic environment
<span>Black Tuesday, Installments, Bull Markets. this is the correct answer I am sure of it .
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Number 4 is actually They realized the policy of appeasement failed
Number 5 is actually They allowed Hitler to gain power and only delayed world war
Number 6 is actually Winston Churchill
Number 9 is actually Germany was permitted annexation of the Sudetenland
Number 10 is actually Austria
Number 12 is actually He gave Germany a chance to experiment with new weapons
I hope this hopes!