answer:Panchatantra is a collection of ancient Indian fables that were originally written in Sanskrit. The stories are primarily animal-themed and feature humorous characters and moral lessons. The book is believed to have been compiled around 200 BCE, and its original purpose was to teach political wisdom to young princes. However, the stories also offer broader life lessons that are still relevant today.

answer:The most popular film genres in 1913 were drama, comedy, and Western.

answer:Challenges during westward expansion included harsh weather conditions, conflicts with Native Americans, lack of resources such as water and food, and long and dangerous journeys.

answer:Trade unions have a long history dating back to the early industrial revolution in the 18th and 19th centuries. The primary purpose of trade unions is to represent workers and their rights in the workplace. They bring workers together to collectively bargain with employers for better pay, working conditions, benefits, and job security. Throughout history, trade unions have played a key role in fighting for fair labor practices, workers' rights, and improved working conditions. Today, trade unions continue to be an important part of the labor movement and represent millions of workers in various industries around the world.