How do BOTH the Vietnam Veterans Memorial AND the collection of items leave them to honor and remember those who lost their lives in the Vietnam War?

The correct answer to this open question is the following.

Although you did not provide references, texts, or context, we can answer in general terms.

The Vietnam Veterans Memorial and the collection of items leave them to honor and remember those who lost their lives in the Vietnam War in that both shown tremendous respect to the people who participated and die during the Vietnam War.

The wall is located in Washington D.C. and was built of black granite. On the wall, you can read the names of approximately 58,000 men and women who lost their lives during the war.  Since 1982, visitors honor these people by bringing offerings as a tribute. Some of them are exhibited as part of the collection in the museum.

Every year, millions of people visit this place to honor the soldiers who lost their lives in service. That is why the authorities of the museum invite the citizens to pay tribute in some other ways.