The election of Abraham Lincoln in 1860 was the immediate cause of southern resolutions of secession. He was the nominee of the Republican party with an anti-slavery expansion platform, he refused to acknowledge the right to secession, and he would not yield federal property within Southern states.
The gestation period of a human, from time of conception to birth is approximately 9 months (266 days/38 Weeks). 9.5 months is calculated from the first day of the last menstrual period (280 days/40 Weeks).
The average time for human gestation is 9 months, so that is 9 x 4 = 36 weeks. â¦Although the average number of weeks per month (if you average it out over a year) is 4.33 weeks per month, so human gestation is closer to 39 weeks. Making the world better, one answer at a time.