Acts 1:8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
Most of Old Testament history is about a specific place in the world: Israel, a specific people: Jews, and one city: Jerusalem. Now for the first time in Biblical history this focus, led by the Spirit of God, was radically changing.
The earthly government of God would be moved from a central government with a single location to a worldwide mission without any boundaries or capital. It was mobile and led directly by Jesus through His Holy Spirit.
Jesus' ministry moved from a nation with borders to no borders. His government on earth remains border-less today. His ministry moved from a specific race of people who depended heavily on their lineage, to every race regardless of their heredity. There is now no racial identity to the Government of Christ, and no multi-generational structure or dynasty. And its language is every language, God’s truth in every language… wow...
Throughout history since this radical change there have been multiple regular attempts to centralize the government of Christ or place its identity on a particular nation, government, party, or system. When radical nationalism creeps into the vocabulary and thinking of professing Christians it is always a corruption. Those who use the identity of Christ's government to attempt to heal the ills of their national government will always find they have only deepened the corruption by producing a poisonous hybrid. Christ's earthly government will remain free... no borders, no earthly capital, no single language, no exclusive race, and no dynastic structure.