What is Promote the general welfare and why was it important in creating a strong nation

Providing for the welfare of the general public is a basic goal of government. The preamble to the U.S. Constitution cites promotion of the general welfare as a primary reason for the creation of the Constitution Rather, it merely allows Congress to spend federal money for the general welfare.

Explanation:

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.