25 points!

What does "domestic affair" and "foreign affair" mean in terms of politics and government? Please I need this soon!

Domestic and foreign in the context of politics refer to the actions' scope.

A nation's "foreign policy" is how a nation chooses to interact with other nations.

Meanwhile, "domestic policy" is defined as decisions that affect occurrences inside a nation's borders.

Foreign = outside country

Domestic = inside country

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.