Final answer:
It is true that following the conquest of the New World, there was a large-scale immigration of Spaniards to the Americas, contributing to the expansion of Spanish influence, wealth through mining, and the spread of Christianity. The conquest included not only military might but also strategic alliances, like recruiting native allies against the Aztecs.
Step-by-step explanation:
The statement that people from Spain immigrated in large numbers following the conquest of the New World is true. After the initial conquests and establishment of colonies in the Caribbean by Spanish missionaries and colonists, substantial Spanish migration to the New World ensued. This mass movement was influenced by the allure of wealth from gold and silver and the desire to spread Christianity, particularly Roman Catholicism, as well as the military ambitions of the conquistadors. Furthermore, the Spanish fortified their conquests using strategic alliances, as recruiting native allies was crucial in overcoming powerful indigenous empires such as the Aztecs.
History records that aside from the dominion over native peoples and the spread of diseases which decimated the indigenous population, Spain's legacy included ushering in European ideologies and religious practices that have had lasting impacts on the culture and social systems of the New World.