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).
Cat Gestation Period. Cat gestation period varies from cat to cat-much like humans! The average gestation period for cats is about 65 days, with most lasting between 63 and 67 days. Having said that, cat pregnancy can last anywhere between about 57 and 70 days.An easy way to remember the gestation period of a cat is to think of each week of cat pregnancy as equivalent to a month of human pregnancy.So, 9 weeks of a cat pregnancy is 63 days (equivalent to 9 months of a full-term human pregnancy).at Gestation Period. Cat gestation period varies from cat to cat-much like humans! The average gestation period for cats is about 65 days, with most lasting between 63 and 67 days. Having said that, cat pregnancy can last anywhere between about 57 and 70 days.