I don't think there are "the" 4 causes, as in 4 causes widely agreed to be the most important: there were many more causes. But here are 4 causes that I find important:
-political importance and prestige: countries wanted to be better than other countries...
-economical: countries sought wealth, for example natural resouces
-religious: countries sought favors with the pope by converting the "pagans"
- curiousity in the Age of Exploration: the will to discover our planet
Answer: you would see an afterimage of a flag with the opposing colour systems(blue,black and red in middle), then white surface of the paper
Explanation: The opponent-process theory states that the cone photoreceptors are linked together to form three opposing colour pairs: blue/yellow, red/green, and black/white and the activation of one member of the pair inhibits activity in the other.
So after staring at a white sheet of paper for a minute, the yellow, white and green parts of the three opponent-process systems would be fatigued and unable to oppose the blue, black and red parts of these systems when you stare at the white sheet of paper. Therefore after seeing white, you would see an afterimage of a flag with alternating blue and black stripes and a block of red in the middle. Once the opposing parts of the three systems recovered, the flag afterimage would disappear and you would then see the white surface of the paper.
Answer:
Liberia's landscapes range from flat coastal lowlands with mangroves and swamps, to rolling hills and plateaus further inland, and low mountains in the northeast. The Nimba Mountain range, partially protected as a Nature Reserve, stretches along the Guinea border.
Explanation:
Answer: Coupons
Explanation:
Coupons are documents issued to customers in order to enjoy financial discount on products purchase in a store. It is a form of sales promotion which could serve as price discrimination used to help retailers keep their customers.
