18. A constant-cost, perfectly competitive widget industry is in long-run equilibrium. A decrease in the
price of gadgets, a substitute for widgets, will most likely result in
A. an increase in the demand for widgets, followed by a decrease in the supply of widgets
B. higher short-run and long-run prices for widgets
C. short-run losses for widget producers, followed by the exit of some firms
D. an upward shift in all short-run cost curves, followed by a higher long-run price for widgets
E. a higher short-run price for widgets, followed by an increase in the quantity produced

there were three types of british colonies: royal, proprietary, and self-governing. each type had its own characteristics. proprietary colonies, such as pennsylvania, maryland, and delaware, were basically land grants from the british government.

hope this : )

food chain i would say only because there is competition on getting food and survival

the deaths of over a million communist soldiers

post-traumatic stress disorder in veterans

        i'm fairly sure that the correct answers are 2 and 3.

        i used both my knowledge of world history and the process of elimination to obtain these answers. option 1 cannot be a possible selection because the mandate of heaven belongs to ancient chinese philosophical belief. option 4 sounds like it would benefit the region than detriment it. however, both 2 and 3 explain a potential reason for what could have contributed to the fall of the roman empire.

      hope this ! if i were you, i'd get a second opinion, because i haven't taken this course for a year. best of luck!

***websites that me understand the curriculum better last year are and ***