What led to changes in U. S. Patent laws in the late 1700s? A. Eli Whitney petitioned the government to change the laws. B. Eli Whitney's cotton gin hurt the economy, so the patent laws were changed. C. Eli Whitney paid his friends in the patent office to change the laws. D. Eli Whitney fought copiers of his cotton gin in court.

1920 census

the census was scheduled for january the 1st, as the government believed that more farmers would be in their homes by that time instead of april. the census did not ask about unemployment, the number of children, and how long was a couple married were not taken into consideration. individuals were considered as residents of the places they normally slept, not the places were they worked at or visited.

2010 census

the census was scheduled for april 1st, 2010. it was the shortest census in history: it only contained 10 questions related to name, age, gender, ethnicity, relationship, and whether the citizen owned a home or rented one. the government launched a website in order to provide the citizens with information regarding the census. there were also "teach census weeks" in schools nationwide.