Barriers to entry into a market come in many forms. Which lists some of the usual barriers to entry?

To what kinds of messages might the brain respond to keep you balanced on one foot?

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.

How did the spanish prove to be excellent allies in the war? give examples?