That statement is true
When presidents are elected with popular mandate, it is very easy for the presidents to pass any laws that he/she wants because their sheer popularity would give overwhelming public support that put pressure for the opposition to conform.
Since Kennedy was elected by a slim margin, a large portion of public still oppose his policies during earlier years of his presidency. This make it easy for his opposition to limit his movement so he can't pass the policy that he wants.
The Ancient Mayans developed the science of astronomy, calendar systems, and hieroglyphic writing. They were also known for creating elaborate ceremonial architecture, such as pyramids, temples, palaces, and observatories.
Answer:
Many people say immigrants change the fabric of a society's culture. Technically, they do. But so does the passage of time, new technology, social media, a native-born population, and much more. In reality, immigrants change culture for the better by introducing new ideas, expertise, customs, cuisines, and art.
Answer:
They both speak Spanish, and they do the same traditions.