Answer: The agricultural act, established the first major government program to help farmers maintain crop prices with a federally sponsored Farm Board that would make loans to national marking cooperatives or set up corporations to buy surpluses and raise prices. This act failed to help American farmers. In the U.S., the first step for agricultural marketing was initiated by the Agricultural Marketing Act of 1929. The Act was introduced as a measure to stop the downward twisting of crop prices. The Act sought to help farmers in buying, selling, and storing agricultural surpluses.
I think it's the telephone because it allows people to communicate better and customers or workers don't have to walk up to everyone and disturb them. You may elaborate more on this with your own opinion
In order to override a presidential veto, two thirds of both houses of Congress (House & Senate) must be present. This will pass a bill which will in turn go over the president's objection.