Question: California joined the Union due to the passage of a package of how many separate bills?

<P0-S0> The 1951 Polish–Soviet territorial exchange or Polish-Soviet border adjustment treaty of 1951 was a border adjustment signed in Moscow between the People's Republic of Poland and the Soviet Union regarding roughly 480 km2 of land, along their mutual border. <P0-S1>  The exchange was made to the decisive economic benefit of the Soviet Union due to rich deposits of coal given up by Poland; these deposits were discovered well before World War II. <P0-S2>  Within eight years following the agreement, the Soviets built four large coal mines there with the total mining capacity of 15 million tons annually. <SEP> <P1-S0> Dr. Leonard Jan Le Vann (1 August 1915 – 29 September 1987) was the medical superintendent at the Alberta Provincial Training School for Mental Defectives (also known as the Michener Center) from the years 1949–1974. <P1-S1>  Although he was born and raised in the United States, Le Vann trained as a physician in Scotland. <P1-S2>  Throughout his career Le Vann wrote many articles, the majority of which were published during his 25-year career at the Provincial Training School. <P1-S3>  These articles covered a broad range of topics that include alcoholism, schizophrenia and experimental treatments of antipsychotic drugs. <P1-S4>  In 1974 Le Vann resigned from the training center, which was due to the Conservative Party of Alberta’s repeal against the Sexual Sterilization Act of Alberta. <P1-S5>  Furthermore, there has been plenty of controversy about how he ran the school. <P1-S6>  This controversy has been brought to attention mainly because of the Leilani Muir trial that took place in 1995. <P1-S7>  Although Le Vann was already deceased at the time of the trial, his name was brought to the court’s attention on many separate occasions. <SEP> <P2-S0>  Exploration and settlement by Europeans along the coasts and in the inland valleys began in the 16th century. <P2-S1> Human history in California begins with indigenous Americans first arriving in California some 13,000–15,000 years ago. <P2-S2>  California was acquired by the United States under the terms of the 1848 Treaty of Guadalupe Hidalgo following the defeat of Mexico in the Mexican–American War. <P2-S3>  American westward expansion intensified with the California Gold Rush, beginning in 1849. <P2-S4>  California joined the Union as a free state in 1850, due to the Compromise of 1850. <P2-S5>  By the end of the 19th century, California was still largely rural and agricultural, but had a population of about 1.4 million. <SEP> <P3-S0>  The compromise, drafted by Whig Senator Henry Clay of Kentucky and brokered by Clay and Democratic Senator Stephen Douglas of Illinois, reduced sectional conflict. <P3-S1>  Controversy arose over the Fugitive Slave provision. <P3-S2>  The Compromise was greeted with relief, but each side disliked some of its specific provisions: <P3-S3> The Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850, which defused a four-year political confrontation between slave and free states on the status of territories acquired during the Mexican–American War (1846–1848).