Please help me with this. I reposted this question but I'm offering more points now.​

For Spanish, it’s because of Christopher Columbus. Columbus first sailed in 1492 from Spain, trying to go to the spice islands by sailing across the world, but landed on North America.
For the French, during the 16th century. Major French exploration of North America began under the rule of Francis I, King of France. In 1524, Francis sent Italian-born Giovanni da Verrazzano to explore the region between Florida and Newfoundland for a route to the Pacific Ocean. The French first came to the New World as travelers, seeking a route to the Pacific Ocean and wealth. Major French exploration of North America began under the rule of Francis I, King of France.
For the Chinese, 1850s. Chinese immigrants first flocked to the United States in the 1850s, eager to escape the economic chaos in China and to try their luck at the California gold rush. When the Gold Rush ended, Chinese Americans were considered cheap labor.
Hope this helped