Answer:
We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity), do ordain and establish this Constitution for the United States of America.
Step-by-step explanation:
Promote the general welfare, and secure the blessings of liberty to ourselves and our posterity: This is the goal stated in the preamble fulfilled by the government when builds roads and schools, these new ¨benefits¨ were made and are meant to be used by everybody, generating advantages and improving the life´s quality of all the people, in this exact point it´s being materialized the fact to promote general welfare.
These goods and benefits (roads and schools) are intended to endure over time, since they are considered as new ways to evolve and improve as a society, for this reason, these new works will be guaranteeing the same benefits to new and future generations.