Acts 1:6 " When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?"
Technically Israel consisted of the ten "northern tribes" and they were being restored to the kingdom in the 1st century.
Both Peter and James write about their restoration to Christ's kingdom:
1 Pet 1;1 Peter, an apostle of Jesus Christ, To those who reside as aliens, scattered (Greek - diaspora) throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, who are chosen
1 Pet 2:19 But you are A CHOSEN RACE, A royal PRIESTHOOD, A HOLY NATION, A PEOPLE FOR God’s OWN POSSESSION, so that you may proclaim the excellencies of Him who has called you out of darkness into His marvelous light
James 1:1 James, a bond-servant of God and of the Lord Jesus Christ, To the twelve tribes who are dispersed (Greek - diaspora) abroad: Greetings.
Strongs
G1290 diaspora dee-as-por-ah'
from G1289;
dispersion, i.e. (specially and concretely) the (converted) Israelite resident in Gentile countries.