According to the u. s. constitution, only the was (were) to be elected directly by the people.

Members of congress

Explanation:

The U.S constitution allows for the election of congress men/women into both houses to be elected directly by the vote of the people.

The senators representing each state in the United state of America are elected by a statewide vote and not by only the people in which they represent in the house of senate, while the house of representatives are elected via members of the congressional district which can change every 10 years. so they are not elected directly by the people because the congressional district can change based on population growth.

Mayors as well are elected by the people. while the president is been voted by every American citizen who is eligible to vote.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers