Final answer:
Lars Levi Laestadius was a Swedish botanist, theologian, and preacher who founded the Laestadian revival movement within the Lutheran Church in the 19th century.
Step-by-step explanation:
Lars Levi Laestadius was a Swedish botanist, theologian, and preacher who founded the Laestadian movement, an influential revival movement within Lutheranism. He emphasized a personal experience of conversion and piety. Operating predominantly in the 19th century, Laestadius had a significant influence on religious life among the Sámi and Nordic populations. His teachings led to the formation of a distinct religious community that continues to bear his name to this day, known as Laestadians.