The first government system that historians think Rome had was a

The Romans established a form of government — a republic — that was copied by countries for centuries In fact, the government of the United States is based partly on Rome's model. The ladder to political power in the Roman Senate was different for the wealthy patricians than for the lower-class plebeians.

Explanation:

1920 census

2010 census

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years