From 1849 to 1852, the Mormons greatly expanded their missionary efforts, establishing several missions in Europe, Latin America, and the South Pacific. Converts were expected to "gather" to Zion, and during Young's presidency (1847–77) over seventy thousand Mormon converts immigrated to America. Many of the converts came from England and Scandinavia, and were quickly assimilated into the Mormon community. Many of these immigrants crossed the Great Plains in wagons drawn by oxen, while some later groups pulled their possessions in small handcarts. During the 1860s, newcomers began using the new railroad that was under construction.