Plz help me it's urget.How can diplomatic mossion increase the reputation of the country?

Diplomatic mission mostly carried out in order to provide some sort of aid to another country for their situation or to establish a mutually beneficial relationship with one another.

Series of diplomatic missions will slowly strengthen our relationship with another country and improve the citizens' perspective toward our own country.

This will increase the likelihood of us establishing a strong alliance with that other countries in case we're in the position that need their help in the future.