Being able to speak and write two languages fluently of which one language is universal means that you can keep an unhindered communication where you understand each other without any linguistic misunderstandings.

Today, most countries use English as a second language and much of the internet is English-based. Therefore, the natural choice is that the first language (universal) should be English and the second language be the native.

The fact that everyone can speak and write the same language fluently also means that racism mostly will decreases.