The main way in which the railroads contributed to the end of the large buffalo herds was that "The railroad tracks were obstacles that the buffalo would not cross". It sounds silly, but the buffalo actually refused to cross the tracks for reasons that are still misunderstood.<span />
Interacting groups shared skills and ideas that improved farming practices
Answer:
huh just do what you're mind is telling you
This is a democracy due to that when this country rose against England, it was motivated to have a say in government and laws which it felt were unfair and had people to give them say in government affairs. Hence, this a representative democracy. Citizens vote for their government officials and the checks and balances prevent one branch from having too much or too little power. These officials represent the citizens' ideas and concerns in government.