1) The universe is estimated to be around 13.8 billion years old.

2) The Internet of Things (IoT) refers to the network of physical devices, vehicles, appliances, and other objects embedded with sensors, software, and connectivity.

3) The legislative branch in many democracies is responsible for making laws, representing the interests of the people, and providing checks and balances on the executive branch.

4) The ancient city of Rome was founded in 753 BC and went on to become one of the most powerful and influential civilizations in history.