What was the name given to the belief that life is made up of competitive struggles and only the fittest survive

Using the pictures and text for reference describe what had to be done to create the central park today

Which of these played the biggest role in increased urbanization in the late 1800s? a) transportation improved b) the military was stronger c) no one was farming anymore d) steam power was discovered

Brainliesttt !me : ) describe the responses to terrorism in the united states.