Nigerian coat of arms has several very powerful symbols on it. First of all it has the two horses that stand for dignity. And the black shield represents the fertile and rich soil of Nigerian land, which is such a blessing to its people. Originally its coat of arms was designed in the English colonial fashion, but later on it was changed. Learn who and when created the Coat of Arms for Nigeria here: https://ask.naij.com/interesting-facts/who-designed-the-nigerian-coat-of-arms-i23432.html.