The COVID-19 pandemic originated in Wuhan, China in December 2019. Since then, it has rapidly widespread in almost every country around the world and has become a new global public health crisis. Since then, the demand for coronavirus vaccines and the supply of vaccine production becomes the most urgent strategic priority issues globally. Many governments have participated in the race of coronavirus vaccine production and distribution typically as the United States, China, Russia, and Australia. The United States marks as the leading vaccine supplier in this race. This country has delivered more than 682 million COVID-19 vaccine doses, all donated free of charge, to 116 countries - more doses than any other nation. The objective of the article is to analyze the vaccine diplomacy of the US base on the vaccine donation dataset, the location where the vaccine was given. The article indicates that the US has taken the lead in the race to produce and supply vaccination to the world. Vietnam, as a comprehensive partner of the US, has benefited from the US vaccine diplomacy policy. The paper has shown that the US. has given a significant amount of medical support and vaccines to Vietnam. These contribute significantly meaning for Vietnam's COVID-19 fighting.

This paper focus on the production /export trade of gum arabic in Nigeria , it is one of the area improve economic of a nation , Nigeria share of the world gum arabic trade. Available statistics indicate that Nigeria remained the second world’s largest producer of gum Arabic after Sudan until 1996. The Table 1 below indicates that Nigeria crashed to the third position  as from 1998 even though the export of gum Arabic from Nigerian ports continues to rise every year. Table No. 3 and 4 show the export data of gum Arabic.