Which u. s. president spoke english as his second language?

Martin Van Buren

Explanation: President Martin Van Buren was the only US president who spoke Dutch as his first language and English as his second Language.

He was born in Kinder hook, New York and spoke Dutch as his first language as he grow up in a dutch environment.

i am confused, what is the question? i can you out if you put it into more depth.

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.