_____________ | 1845-1861 | Texas became the 28th state of the USA. |

Texas became the 28th state of the USA in 1845.

The information provided is a brief historical fact stating that Texas became the 28th state of the USA between the years 1845 and 1861.

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Step 1: In 1845, Texas was admitted into the United States as the 28th state.

Step 2: Prior to its admission, Texas had been an independent republic since declaring independence from Mexico in 1836.

Step 3: After gaining independence, Texas sought statehood and entered negotiations with the United States government.

Step 4: On December 29, 1845, Texas officially became a state after President James K. Polk signed the Texas Admission Act.

Step 5: The admission of Texas as a state was a controversial issue at that time, as it led to tensions between the Northern and Southern states over the issue of slavery.

Step 6: The addition of Texas to the United States helped to solidify the country's claim to the vast territory that was acquired through the annexation.

Step 7: The admission of Texas also had political and economic implications, as it expanded the United States' influence in the Southwest and opened up opportunities for settlement and development in the region.

Step 8: Texas remained a slave-holding state until the end of the Civil War in 1865, when slavery was abolished in the United States with the ratification of the 13th Amendment to the Constitution.