Why was salt so valuable for people living in Sub-Saharan Africa? (i need 3 reasons please)​

Which of the following accurately describes the workforces of the united states and canada? a. most of the workforce in the united states and canada is employed in the service industry. b. most of the workforce in the united states and canada is employed in the educational field. c. most of the workforce in the united states and canada is employed in manufacturing and mining. d. most of the workforce in the united states and canada is employed in agriculture.

What was the mame given to the idea that americans should expand across the nation ro the pacific coast

What were the social, economic, and political characteristics of spanish and portuguese rule in latin america?