- Political instability: Texas was in turmoil in the early 19th century. It had been a part of Mexico since 1821 but was largely self-governing. In 1833, the Mexican government tried to impose more control, leading to the Texas Revolution. The revolution succeeded in 1836, but Texas remained an independent republic until it was annexed by the United States in 1845.
- Economic opportunity: Texas had a lot to offer potential filibusters. It had vast amounts of land available for settlement, and its economy was growing rapidly, primarily due to the cotton industry. Many Americans saw Texas as a great place to make a fortune.
- Desire for expansion: Many Americans believed that the United States should expand its territory into Texas and other parts of Mexico. This desire was driven by a variety of factors, including economic opportunism, nationalism, and a belief in the "manifest destiny" of the United States to spread its influence and institutions across the continent.
Conditions in Mexico:
- Weakness of the Mexican government: The Mexican government was weak and ineffective in the early 19th century. It was struggling to maintain control over its vast territory and was often embroiled in civil war. This weakness made it difficult for the Mexican government to resist filibuster invasions.
- Political disarray: Mexico underwent several political changes during the early 19th century, including a series of revolutions and the establishment of a federal republic in 1824. This political instability weakened the central government's authority and made it difficult to maintain order in the country.
- Hostility towards the United States: Many Mexicans resented the United States' support for the Texas Revolution and the annexation of Texas in 1845. This resentment led to increased tensions between the two countries and made it easier for filibusters to operate in Mexico.