Well in this period, it is considered the old stone age and for good reason, as this era is characterized by the use of rudimentary chipped stone tools. Basically it was the era when human started using tools that were made from stone. Or in other words, innovated.
Heavy rainfall or violent wave activity can cause "floods", since if a particular area that is affected by these weather conditions lacks the drainage resources necessary to reduce the water build up then it has nowhere to go.
Answer:
Railroad time became the nation's standard, linking Americans in one more way. The unchecked power and greed of the railroad companies led to widespread corruption and abuse of power.
Explanation:
Preserving natural areas in the United States was major debate at the turn of the century. Theodore Roosevelt was the major leader in preserving wilderness and was essential in creating the natural parks. While other politicians wanted to cut down trees to build cities and factories, naturalists wanted to save the natural beauty of the United States.