Please help me asap I will mark brainliest if you help 1. When you make a choice, the experience from what would have been your second option is called (3 points) trade-off supply-demand opportunity cost

Which was an effect of the establishment of the european union

How has our understanding of the first sentence of the declaration of independence changed over time?

Africa, 1914 which statement is the best conclusion for the information presented in the map? a) european colonization had a positive impact on african nations. b) african colonization the economic growth of all european nations involved. c) by the outbreak of world war i, most of the african continent was under english control. d) by the outbreak of world war i, most of the african continent was under european control.