Why did the civil war become a long bloody battle and bitter struggle which neither side won an easy triumph?

How many citizens of mexico does it take to equal the ecological footprint of the average citizen of the united states? it takes nearly three mexican citizens to equal the ecological footprint of the average u.s. citizen. it takes about 12 mexican citizens to equal the ecological footprint of the average u.s. citizen. it takes just over eight mexican citizens to equal the ecological footprint of the average u.s. citizen. two citizens of mexico equal the ecological footprint of one average citizen of the united states. they are essentially equal?

What is the purpose of a firm? the answer is to produce goods and services

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?