Spanish is not considered the world language, as that title is often given to English due to its widespread use in international communication, business, and diplomacy. However, Spanish is one of the most widely spoken languages in the world, with over 460 million native speakers. It is an official language in 21 countries and is commonly used as a second language in many others. **

When learning Japanese, it is generally recommended to start with vocabulary before diving into grammar. Building a strong vocabulary base will help you understand and communicate better in the language. Once you have a good grasp of basic vocabulary, you can then focus on learning grammar rules to structure your sentences correctly. Ultimately, a balance of both vocabulary and grammar is essential for mastering Japanese. **

The world language was chosen based on several factors, including the number of speakers, geographical distribution, and cultural significance. English was ultimately selected as the world language due to its status as a global lingua franca, with over 1.5 billion speakers worldwide and widespread use in international communication, business, and diplomacy. Additionally, English is the official or dominant language in many countries and is commonly taught as a second language in educational systems around the world. **

English has become the world language due to a combination of historical, political, and economic factors. The British Empire's colonization efforts spread the language to many parts of the world, and the United States' rise as a global superpower further solidified English's dominance. Additionally, English has become the language of international business, science, and technology, making it essential for global communication. As a result, English has become the lingua franca for people from different linguistic backgrounds to communicate with each other. **

English became the world language primarily due to the expansion of the British Empire in the 17th and 18th centuries. As the empire grew, so did the influence of the English language, as it was spread to various parts of the world. Additionally, the rise of the United States as a global superpower in the 20th century further solidified the dominance of English as a world language. The widespread use of English in international business, diplomacy, and technology has also contributed to its status as a global lingua franca. **

It is difficult to determine which language is the easiest in the world as this can vary depending on a person's native language, their exposure to different languages, and their personal learning style. However, some commonly cited easy languages for English speakers include Spanish, Italian, and Dutch due to their similarities in vocabulary and grammar. Ultimately, the ease of learning a language is subjective and can vary from person to person. **

Portuguese is not considered the hardest language in the world, as language difficulty is subjective and varies from person to person. While Portuguese may pose challenges for English speakers due to its unique grammar rules and pronunciation, there are other languages that are often considered more difficult, such as Mandarin Chinese, Arabic, or Japanese. With dedication and practice, anyone can learn Portuguese or any other language effectively. **

The oldest language in the world is difficult to determine definitively, as languages evolve and change over time. However, one of the oldest known languages is Tamil, which is spoken in southern India and Sri Lanka. It is believed to have been in use for over 5,000 years. Another contender for the title of oldest language is Sumerian, which was spoken in ancient Mesopotamia around 3,500 BCE. Both of these languages have ancient roots and rich histories. **