What year did the constitution specifically allowed slaves to be imported into the US?
I think it was 1706.
The Constitution of the Republic of Texas (1836) provided that slaves would remain the property of their owners, that the Texas Congress could not prohibit the immigration of slaveholders bringing their property, and that slaves could be imported from the United States (although not from Africa). Source: Texas State Historical Association
Slaves owners deprived their slaves of the many things we, today, take for granted. Slaves were not allowed education, they were not allowed to go out how and when they wanted, they were not allowed to vote, they were not allowed to compain when they are abused, and slaves were not allowed to sleep in bed and wear proper clothing.
About what percent of the slaves imported into the new world were taken to what is now the united states?
How did the constitution deal with the issues of representation of slaves and the importation of slaves?
I The constitution allowed COngress to outlaw the slave trade, which it promptly did. To prevent excess membership in the House from states with thousands of slaves - giving the South excessive voting power in Congress - only 3/5 of the slave population would figure into reapportioning seats in the House.