Final answer:
A common factor of Pentecostal revivals in the U.S. and abroad was a strong focus on evangelism and missionary work, aligning with the goals of the Second Great Awakening.
Step-by-step explanation:
A common factor that characterized the Pentecostal revivals in the United States and in other countries was the burden for the lost and a willingness to serve as missionaries. Both domestically and internationally, Pentecostal movements were marked by an enthusiasm for evangelism and a commitment to spreading the gospel. This dedication to missionary work was in line with the ethos of other religious revivals from the period such as the Second Great Awakening, which emphasized individual salvation through personal religious experience and moral reform. During the Pentecostal revivals, similar themes of personal spiritual rebirth and evangelizing the unreached were central.