Final answer:
Moses Austin undertook the Texas venture to establish a lead mining settlement and secure a land grant from the Spanish government to encourage colonization.
Step-by-step explanation:
Moses Austin undertook the Texas venture for economic reasons. He intended to establish a settlement in Texas to mine and sell lead, which was in high demand at the time. Austin believed that the venture would bring both personal wealth and economic growth to the region. Additionally, he wanted to secure a land grant from the Spanish government to protect his settlement and encourage further colonization of Texas.
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