Were horses introduced to the New World by Europeans?

What is one possible reason a constitutional monarchy developed in england while an absolute monarchy continued in russia

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio river.

How did isolationism affect foreign policy?