It is important to note that politics and the economy have effects on the transportation industry, as the industry is ever changing with new policies, regulations, or capacity issues. 
Politicians and the policies they create dictate the US economy, effecting all industries. It is seen that the transportation industry saw effects because of the trade and tariff wars. The overall regulations depend largely on the economic and political outlook of the party in power. 
For instance, a government that is inclined to pursue neo-liberal policies,  could pass more legislations favoring industries and big businesses, while a government inspired by socialism could push policies favoring small businesses.
Hence, the answer was given and explained above.
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Answer:
                                  Dr.          Cr. 
Note Receivable   $6,000
Account Receivable            $6,000
Explanation:
Note is received against a payment of sale mad on credit. A new receivable will be built with the name of Note receivable, so this account will be debited.   To deduct the value from the account receivable we will credit the account receivable account due to its debit nature. Later on the interest will be accrued and added in this balance.
 
        
             
        
        
        
Answer:
Firms may be inclined to keep their workers’ wages above the equilibrium level.
Explanation:
The efficiency wage theory states that if an employer increases the wage of his/her employees, they will be motivated and their productivity will increase. The increase in productivity should offset the increased labor costs. So the costs of higher wages should be recouped through increased productivity. Higher wages also reduce worker turnover, reducing hiring and training costs.
 
        
             
        
        
        
Answer:
D) Buyer
Explanation:
The buyer is responsible for developing the technical specifications of the product that is going to be purchased, inviting potential vendors, and will also be the person in charge of actually executing the purchase. The buyer is the person that has the actual authority and is responsible for carrying out the purchase.