What is the separate-but-equal doctrine, and why do you think it was it accepted for so long?

Separate-but-equal was a legal doctrine in United States constitutional law according to which racial segregation did not violate the Fourteenth Amendment to the United States Constitution, adopted in 1868, which guaranteed equal protection under the law to all citizens. It was accepted for so long due to racial biases inherited from the slave trade, and generational segregation practices.

These islands/chinampas then provided rich soil for crops with easy access to water. i hope this is correct, im so sorry if its not !