Which of the following is called Year of Deputations?

Which of the following is called Year of Deputations?

مندرجہ ذیل میں سے کس کو ڈیپوٹیشن کا سال کہا جاتا ہے؟
Explanation

The year 9 Hijri (630 CE) is known as the "Year of Deputations" (عام الوفود, 'Am al-Wufud').

Because numerous delegations came to meet the Prophet Muhammad SAW and declare their allegiance to Islam.