Why did mirabeau lamar send the santa fe expedition?

Mirabeau Lamar sent the Santa Fe Expedition in 1841 to assert Texas' claim over Santa Fe and to promote trade with the region. He aimed to expand Texas' borders and influence, believing that establishing a presence in New Mexico would bolster the young republic's economy and strengthen its sovereignty. The expedition, however, faced logistical challenges and hostile encounters, ultimately leading to its failure. This event highlighted the tensions between Texas and Mexico and underscored the difficulties in Lamar's expansionist policies.