5
50 Years
Your question makes no sense. What period in history are you asking about? You used the tags "US History," "Incas," and "Aztecs," but Spanish conquerors defeated the Incas and Aztecs more than 250 years before the United States was founded. You should also explain what you mean by "holdings."
Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.Rome gained land during the republican years by conquest, treaty and by inheritance.
The Mayas came 300 years before the Aztecs
The Aztecs left Aztlan in 1519 during the 16th century. The Aztec Empire lasted from 1428 to 1521, almost 100 years.
5 years
5 years
5
2
5
1943
11 years
people over 500 years ago
The question is too vague: the Spanish Conquest of what? whom? The Aztecs? The Incas? Or do you mean the Re-conquest (La Reconquista), the winning back, after hundreds of years of Moorish occupation of Spain, by Christian Spain under the 'Reyes Catolicos', Ferdinand and Isabella? Be more specific, please.
It would be five years to defeat the Incas and the Mayas.
50 Years
The Incas all lived in South America. The Maya had been a culture in Central America but that culture had collapsed before the Spanish arrived. The Aztecs ruled Mexico. In the past few years there have been some discoveries that some trade might have existed between the Aztecs and the Incas. No indication has surfaced of any trade between the Incas and Central America.