After the passage of the acts in the United States and Great Britain abolishing the slave trade, the agitation on the subject of slavery abated very considerably for a number of years, only, however, to be revived at a later period in a more virulent form. In the year 1812, the state of Louisiana, erected out of the territory of Orleans, was admitted into the Union as a slave state, and that part of the territory east of the Pearl river and bordering on the Gulf of Mexico, was added to the territory of Mississippi. The name of Mississippi was then given to the territory of Louisiana. In 1816, Indiana was admitted into the Union as a free state, and in 1817, Mississippi was admitted as a slave state, the residue of the territory of that name taking the name of Alabama. In 1818, Illinois was admitted as a free state and in 1819, Alabama came in as a slave state. This increase of the number of slave states did not increase the number of slaves, as the slaves introduced into them came from the older slave states. If any slaves were introduced from Africa or any foreign country, it was by such evasion of the laws as will take place under any government, and they were not so introduced to any appreciable extent. In 1819, towards the close of the 15th Congress, a bill was introduced into the House of Representatives to authorize the erection of the state of Missouri out of part of the territory of that name, and on motion of Tallmadge, of New York, a clause was inserted in the bill prohibiting the further introduction of slaves and granting freedom to the afterborn children of those already there, on arriving at the age of twenty-five, the proposition being carried by a vote of 87 to 76. This proposed restriction caused a very excited debate, in the course of which Cobb, of Georgia, said that "a fire had been kindled which all the water of the ocean could not put out, and which only seas of blood could extinguish;" he did not "hesitate to declare that if the northern members persisted, the Union would be dissolved." The bill, however, passed the House with the restriction, but in the Senate, the latter was stricken out, the clause prohibiting the further introduction of slaves by a vote of 24 to 16, and the one freeing the children by a larger vote, there being only 7 votes for retaining it. The House refused to concur with the Senate and the bill was lost.