Ronald Reagan<span> addressed the nation and proposed that the United States develop new antimissile technology that would protect the United States from nuclear missile attacks. Reagan’s speech marked the beginning of what came to be known as the controversial Strategic Defense Initiative (SDI).</span>
Catapult
He designed the catapult to defend Syracuse
Answer:
a period of relative stability in Eurasia under the Mongol Empire during the 13th and 14th centuries.
Explanation: