What was the biggest fear of the Radicals concerning presidential reconstruction? Southerners would regain control of Congress. Soldiers would not repay the war debts. The congress would not approve new amendments. Blacks would not gain rights.

Blacks would not gain rights.

Explanation:

The radical republicans argued that the blacks deserved the same political rights and privileges as held by their white counterparts. Though there was always concern about the role of the federal government played in state affairs but the period of reconstruction needed direct intervention as claimed by the radicals. They also claimed the confederate officials should be prosecuted for their Civil War actions. And called for the amendments to guarantee the new privileges to the blacks.

mustafa ataturk thought nationalism in turkey would best be achieved by modernizing the country.

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.