Why do Arabs and Persians usually wear traditional clothes?

Difference: They belong to different nationalities. Today, Iran is mainly Persian, and Saudi Arabia and other countries are mainly Arabs. * * * Similarities: Everyone believes in Islam. Persians are Iran's main ethnic group in West Asia, also known as Iranians. The population is 204 10000 (1985), accounting for about 5 1% of the total population in China. Mainly living in the central and eastern provinces of Iran. Another 600,000 people are scattered in Afghanistan, Pakistan and Iraq. It belongs to the southern Mediterranean type of Europa. Use Persian, belonging to Indo-European Iranian language family. They believe in Islam, mostly Shiites, and very few people believe in Zoroastrianism. Arabs refer to Arabic-speaking residents in West Asia and North Africa. The word "Arabia" first appeared in the 9th century BC. Europeans call them "Saracens". The residents of most countries and regions in the Middle East are Arabs, which are the most transnational ethnic groups in the world, mainly distributed in West Asia and North Africa, accounting for the majority of the residents in these countries, and a few are distributed in Turkey, Iran, Afghanistan, Indonesia, Ethiopia, Somalia, Chad, Tanzania and other countries, with an estimated population of about 230 million. It belongs to Europa Mediterranean type, and some people in North Africa and South Arabia are mixed with black characteristics.