1. In 1838, the Indian Removal Act was signed into law by President Andrew Jackson, leading to the forced relocation of Native American tribes from southeastern states to Indian Territory (present-day Oklahoma). This law had significant impact on the Potawatomi tribe, who had peacefully surrendered their land to the U.S. government in Iowa. Many of the tribe members were forcibly removed and marched to Kansas, with hundreds dying along the way in what became known as the Trail of Death.

2. On March 31, 1916, the Iowa National Guard was called into service to help secure the U.S.-Mexico border during the Mexican Revolution. Iowa soldiers played a key role in securing and patrolling the border, and their efforts were recognized by President Woodrow Wilson.

3. In 1924, the rural community of Center Point in Linn County was hit by a devastating tornado that killed 12 people and destroyed dozens of homes and farms. The town's Lutheran church, which had just been built that year, was also destroyed. Despite the tragedy, the community rallied together to rebuild and support each other.

4. On March 31, 1939, Iowa Governor George A. Wilson signed a new law that raised the state's minimum age for marriage from 14 for females and 16 for males to 18 for both genders. This law aimed to combat child marriage and protect vulnerable minors from being forced into early marriages.

5. In 1990, Iowa became the first state to pass a law allowing lottery winners to remain anonymous. The law was passed in response to concerns over the safety and privacy of lottery winners, who were often targeted by scams, harassment, and even violence after winning large sums of money. Today, several other states have passed similar laws to protect the identities of lottery winners.