The answer is b. continental break-up. During this time, the continents began to
form and also separate in different areas. It was also the time of mammals as
dinosaurs were now extinct, mammals began to flourish in the earth. The climate
was now cooling down during this period.
Answer:
What are interstate compacts, and what part is played by the national government in these agreements? They are written agreements to settle disputes between two or more states.
Answer:
Andrew Jackson developed the spoils system. This was a practice of giving government jobs to a person's political supporters. Andrew Jackson gave government jobs to his supporters, which were often common people. This helped break the hold the upper class had on government jobs.
There are different types of terrains the commons ones are plateau, mountain, plain, and valley terrains
