Early in the eighteenth century the Spaniards built in Texas, then a part of Mexico, a number of staunch structures that were designed to serve not only as chapels but also as fortresses. The mission that at length became known as the Alamo was first built on the Rio Grande in 1710, and during the next forty-seven years was rebuilt four times in a new location, before it was given a final resting-place at San Antonio, on the banks of the Alazan River. There it was called Alamo, or Poplar Church. Though the Alamo was begun in 1744, it was not completed until 1757. For nearly eighty years there was nothing specially notable about the building. Then came the events that made the name famous. In 1832 Sam Houston was sent to Texas by President Jackson to arrange treaties with the Indians for the protection of settlers on the border. Just at this time settlers in Texas, which was then a part of the state of Coahuila, were seeking equal privileges with the other Mexican states. Most of the settlers had come from the United States, and they hoped that in time Texas might become a part of that country. On February 13, 1833, Houston wrote to President Jackson that the time was ripe for getting hold of the country. Less than three months later he was asked to serve as a delegate to a constitutional convention, which demanded from Mexico the organization of the territory into states, and was made the chairman of the committee which drew up for the proposed states a constitution based on that of the United States. Stephen F. Austin, who has been called "The Father of Texas," went to Mexico City with the petition. But he was imprisoned, and the request of Texas was denied by Santa Anna, president of Mexico. Later, when the colonists attempted to defend themselves against the Indians and other lawbreakers, the demand was made that they give up their arms. The organization of a provincial government followed in 1834, and Houston was chosen commander-in-chief of the army. The brief war with Mexico was marked by a number of heroic events, chief of which was the defence of the Alamo, where a small force of Texans resisted more than ten times the number of Mexicans. When the army of Santa Anna approached San Antonio, on February 22, 1836, one hundred and forty-five men, under the leadership of Colonel James Bowie and Lieutenant-Colonel William B. Travis, retired within the church fortress. For nearly two weeks these heroic men defended themselves, and the enemy did not gain entrance until every one of them was killed. The details of the heroic struggle were not known until 1860, when Captain R. M. Potter printed an account in the San Antonio _Herald_, in which he had patiently pieced together the reports that came to him through those whom he regarded most dependable among the besiegers, and from one who was an officer in the garrison until within a few days of the assault.