Why was the national recovery administration unsuccessful?

workers complained about the projects it gave them.

the rules and codes it created were too complex.

the u. s. supreme court ruled it unconstitutional.

business and labor leaders did not support it.

The correct answer is "The rules and codes it created were too complex".

Explanation:

The National Recovery Administration (NRA) was a national agency established in 1933 by U.S. president Franklin D. Roosevelt with the main goal of uniting different sectors of society by using codes of fair competition. The idea was to reduce destructive competition among industry, labor, and government by setting and following certain rules and codes. However, the NRA was unsuccessful because the rules and codes created were too complex and difficult to follow.

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c.) the country needed a stronger central government.