Catholicism being common religion in the south west. Reason why many Pueblo and Pima and other native Americans there are mostly Catholic. Also major cities like San Francisco and San Diego were founded by spanish catholic missionaries.
Looking at today there are not too many lasting effects. The United State language (English) is a lasting effect because we are all mainly immigrants from Britten. Food is another lasting effect. While we have mainly different foods in America our main staples like meats and dairy's are all from past knowledge when we where British.
it went on the deserts and created plateaus and plains
south American people spoke spanish because it was their inheritage
This is a disputed answer. Some say the first European explorers to reach America were the Vikings, with Leif Erickson being the first of them. However, the settlement he founded in about the year 1000 AD in what the vikings called Vinland, and was probably on the coast of modern Newfoundland, Canada, lasted only a short time and the Vikings did not follow-up with further exploration and settlement. Erikson's exploration and settlement had little effect on Europe and none that we know of on America. The European exploration and settlement of America that had a lasting effect on both Europe and America was that which followed the exploratory journey of Christopher Columbus (called ChristoffaCorombo in his native Genoa and Cristóbal Colón in Spain) in the year 1492, some 500 years after Leif Erikson.
An effect of the expeditions of Pizarro was the Spanish conquest of the Inca Empire in South America. This led to the eventual colonization of the region by the Spanish, resulting in the destruction of Inca civilization and the imposition of Spanish culture and governance.
A lasting effect of the French colonization is that some Canadians still speak french language
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The Treaty of Tordesillas was agreed upon by the Spanish and the Portuguese to clear up confusion on newly claimed land in the New World.
tobacco.
Yes
the lasting effect of Martha Washington had was that she took care of them
Increased literacy.