Answer: The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861. Claiming this United States fort as their own, the Confederate army on that day opened fire on the federal garrison and forced it to lower the American flag in surrender.
Answer:
Sponges were among the earliest animals. While chemical compounds from sponges are preserved in rocks as old as 700 million years, molecular evidence points to sponges developing even earlier.
The 3rd one is the correct answer
