Explanation
The immediate cause that caused the outbreak of the First World War was, as I already mentioned, the murder of the Austrian-Hungarian archduke, Francisco Fernando, in Sarajevo Serbia, on June 28, 1914
He was with the democratic or popular party.
They wanted a tougher fugitive slave law because of the Underground Railroad too many of their slaves were escaping. They also wanted the northerners help return slave fugitives
The strategic defense effort, which Regan proposed, put pressure on the Soviets to develop similar technologies. Option A is correct.
<h3 /><h3>Who was Regan?</h3>
Ronald Wilson Reganth was the 40th U.s. president of America. He was an American politician.
He previously worked as the president of California before retiring to run for president.
Ronald Wilson Regan was a great strategist thinker during the battle.
He utilized a defensive military program to force the Soviets to start developing the similar technologies.
Therefore, option A is correct.
Learn more about the Regan, refer to:
brainly.com/question/13234994