Why was the constitutional convention called?

The Constitutional Convention was called in May of 1787 to make revisions to the Articles of Confederation. George Washington was immediately named the convention's president. The articles had been shown since their adoption to be very weak.

Explanation:

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

your answer would b. the missisipi river

hope i you : )