Written identification for the Columbian exchange

Which sentence describes william henry harrison's contribution to the us efforts in the war of 1812? a. he was responsible for securing the us coast against british warships. b. he successfully kept the american indians out of the war against britain. c. he defeated the american indian forces at the battle of the thames. d. he was responsible for building an alliance with the creek tribe. e. he successfully kept the british army from entering washington dc.

How was louis and clark expedition event unfolding and what was going on

The chinese exclusion act was the first significant law restricting immigration into the united states. why do you think the us government singled out chinese immigrants in particular for exclusion?