Simplify the following text for a Grade 8 native English-speaking person.
Original: These regions were the first newly industrialized countries , noted for maintaining exceptionally high growth rates and rapid industrialization between the early 1960s and 1990s .
Simplified: These regions were the first newly industrialized countries . They are known because they had very hight growth rates ( they become rich very fast ) and fast industrialization between the early 1960s and 1990s .