Which statement best explains why the clovis people disappeared?
they overhunted the big animals that were their food source.
they were killed in conflicts with earlier paleo-indians.
they hunted animals that were killed by an ice age.
they were killed by animals because of their inferior weapons.

The correct option is: "They were killed in conflicts with earlier Paleo-Indians. "

The clovis culture, or culture of Clovis or plain culture - in the south of EE. UU.- was considered in the mid-twentieth century as the oldest indigenous culture in the Americas. Its calibrated radiocarbon dating indicates a period between 10 600 and 11 250 a. C. That time corresponds to the last years of the glaciation of Würm or Wisconsin (the last ice age).

Since the mid-twentieth century the theory generally accepted among archaeologists is that the clovis were the first inhabitants of America. The main rationale for this theory was that no solid evidence of preclovis human presence had been found. According to the classical theory, the Clovis people crossed the Beringia bridge over the Bering Strait from Siberia to Alaska approximately 13,000 years ago, in the period when the water level dropped during the ice age, and then marched towards the south through an ice-free corridor east of the Rocky Mountains, in the western part of present-day Canada, as the glacier retreated.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )