Main difference between primary and secondary sources?

Donald trump will plan to use his emergency powers to build the wall between the us and mexico, instead of shutting down the government again?

Today england’s government is encouraging tertiary economic activities ,including_to make up for the loss of industry

Plz which of the following spanish conquistadors did not explore large parts of what is now the united states? a. juan ponce de leon. b. hernando cortés. c. hernando de soto. d. francisco coronado.