Which of the following statements about the brandt line is false?
a. the brandt line gives a visual representation of development.
b. developed nations are wealthier as a result of the successful production and trade of manufactured goods.
c. developing nations are poorer due to limited export incomes.
d. the brandt line theory was developed by an american economist.

The correct answer is D, as that statement is false. The Brandt Line theory wasn't developed by an American economist, as it was proposed by the German politician Willy Brandt.

Explanation:

Proposed by the German Chancellor Willy Brandt in 1980, the Brandt line is a line that divides the north and the south. It shows the gap between the most developed regions and the least developed regions.

this is true

explanation:

japan participated in world war i from 1914 to 1918 in an alliance with entente powers and played an important role in securing the sea lanes in the west pacific and indian oceans against the imperial german navy as the member of the allies.