What is the difference between global trade and domestic trade?
(In your own words)

Global trade is the exchange of goods between all the other countries.

Domestic trade is the exchange of goods in our/your own country or that particular country.

the language dates from the contacts of arabian traders with the inhabitants of the east coast of africa over many centuries. under arab influence, swahili originated as a lingua franca used by several closely related bantu-speaking tribal groups.