After Christ's ascension, the Apostles were told to go back to Jerusalem until they had received power. Even after the Day of Pentecost, when the Apostles were filled with the Spirit, they stayed in Jerusalem until they met with persecution at the hands of the religious leaders of the day, particularly a man called Saul.
I'll add that The Bible records Peter going out to Ceaserea, and Paul traveling West through the Roman Empire. Historical works outside of the Bible indicate that John the younger would go to work in Asia Minor, Thomas in India, Peter in Britain, Andrew in Ukraine and southern Russia, Simon the Zealot preached through Northern Africa all the way to Britain, Bartholomew went North through Turkey and into Armenia, a few stayed closer to Jerusalem.
They get killed =S
The apostles received power from the Holy Ghost during Pentecost.
The Holy Spirit came to the apostles on the day of Pentecost. He filled them and they began to speak in new tongues.
The 12 Apostles on the Day of Pentecost.
The main people in the Pentecost story are the disciples of Jesus, who were gathered together in a room, and the Holy Spirit, which descended upon them in the form of tongues of fire. This event marked the beginning of the Christian church and empowered the disciples to spread the message of Jesus to people of different languages.
the holy spirit went upon the apostles and giving the apostles inspiration.
To preach the Gospel.
When the Apostles received the Holy Spirit on the Day of Pentecost.
After the Day of Pentecost, the apostles began testifying about Jesus Christ and performing miracles in His name. They traveled to various regions, preaching the Gospel and establishing new Christian communities. Many people witnessed their boldness and the power of the Holy Spirit working through them, leading to the growth of the early Church.
The 12 Apostles receiving the Holy Spirit on the Day of Pentecost.
At least 12 people(the Apostles).
The Holy Spirit, the Blessed Virgin Mary, & the 12 Apostles.
The Day of Pentecost, in the Acts of the Apostles.