Roman Catholic Archdiocese of Galveston–Houston ""Mother Church of Texas"". The prefecture was elevated to a vicariate apostolic on July 10, 1841. On May 4, 1847, the vicariate became the Diocese of Galveston in the Province of New Orleans and St. Mary Cathedral Basilica was designated the cathedral. In 1926, the then-diocese was placed in the newly created Province of San Antonio. After the devastating Galveston Hurricane of 1900, Houston began to expand after the Port of Houston was completed. At the request of Wendelin J. Nold, fifth bishop of Galveston, Pope John XXIII authorised the construction of a co-cathedral of convenience in Houston, and on
Port of Galveston island's grade. As a result, the port was now considered a deep-water port and was able to handle larger ships. By the time World War I began, Galveston "was the leading cotton port in the world, the third largest exporter of wheat, and an important sugar import center." The port also became a major immigration center, with almost 50,000 people entering the country between 1906 and 1914. In March 1920 local longshoreman called for a strike, seeking a wage increase and recognition of their union, the International Longshoreman's Association. Some of the port traffic was diverted to the Port of