What issues and events caused multiple claims to Texas?

in the age of cantact when spanish explorers wanted god,gold and glory.they wanted to claim land for their country

http://tshaonline.org/handbook/online/articles/nps01

The issue of multiple claims to Texas can be traced back to its history of colonization, expansion, and the changing political dynamics of the time. Several key events and factors led to multiple claims on the territory of Texas:

1. Spanish Claim: The Spanish were the first European power to claim Texas. They established a presence in the region through missions, presidios (forts), and settlements during the 16th and 17th centuries.

2. Mexican Independence: After gaining independence from Spain in 1821, Mexico inherited the Spanish claim to Texas. However, the Mexican government struggled to effectively govern the vast and sparsely populated territory.

3. American Colonization: Starting in the early 1820s, American settlers began to migrate to Texas, attracted by promises of cheap land. These settlers, known as empresarios, obtained colonization contracts from the Mexican government to bring in American families.

4. Texas Revolution: Growing tensions between Mexican authorities and the American settlers led to the Texas Revolution, which lasted from 1835 to 1836. The Texans, led by figures such as Stephen F. Austin and Sam Houston, fought against Mexican forces to secure independence from Mexico.

5. Republic of Texas: In 1836, Texas declared independence from Mexico and formed the Republic of Texas. However, Mexico did not recognize Texas as a sovereign nation and continued to claim it as part of its territory.

6. Annexation by the United States: The Republic of Texas sought annexation to the United States, which was a highly contentious issue. It took several years of political wrangling, but Texas was finally annexed by the United States in 1845, leading to Mexico's outright rejection of the annexation and a dispute over the southern border of Texas.

7. Mexican-American War: The Mexican-American War (1846-1848) further fueled the issue of multiple claims to Texas. The war was partly a result of unresolved border disputes, with the Mexican government refusing to accept the annexation of Texas as valid.

8. Treaty of Guadalupe Hidalgo: The Mexican-American War ended with the signing of the Treaty of Guadalupe Hidalgo in 1848. This treaty resolved the border dispute, with Mexico recognizing the Rio Grande as the boundary of Texas and ceding a large portion of its territory, including present-day California, Arizona, New Mexico, Nevada, Utah, and parts of Colorado and Wyoming, to the United States.

In summary, the multiple claims to Texas arose due to the colonial ambitions of Spain, the struggle for Mexican independence, American colonization efforts, the Texas Revolution, the subsequent formation of the Republic of Texas, its annexation by the United States, and the border disputes that followed.

When? What kinds of claims?