How the Three Sisters crops help one another

Three crops can help one another grow

In the Indigenous North American Three Sisters system, corn gives beans something to climb, beans add usable nitrogen to the soil, and squash covers the ground to slow weeds and keep moisture in. Each crop helps the others.

Napoleon's reforms survived even after his empire collapsed

Napoleon's armies carried new legal systems and administrative reforms across much of Europe. Some changes weakened inherited privileges, standardized laws and strengthened equality before the law for men. After Napoleon's defeat, restored rulers could remove French control but often found it harder to erase institutions that local governments and societies had already adopted.

Children may say "gived" after first learning "gave"

A child may correctly learn the word "gave," later start saying "gived," and eventually return to "gave." One explanation is that the child has learned the general rule for making past tense and begins applying it too widely before mastering the exceptions.

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How the Three Sisters crops help one another

Three crops can help one another grow

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