Answer:
Permian - Triassic
Cretaceous - Tertiary
Explanation:
There are two extinction events that influenced greatly the evolution of dinosaurs. The first one was the Permian -Triassic mass extinction, where 95% of the species went extinct. This mass extinction ended the reign of the sinapsids, thus it opened up space for the reptilians, including the ancestors of the dinosaurs. Once the majority of ecological niches were free for taking, the dinosaur ancestors quickly started to evolve and soon after gave rise to the first true dinosaurs. As they were the ones that managed to exploit the environment the fastest, they became the dominant animals on the planet. That lasted until the Cretaceous -Tertiary mass extinction. The dinosaurs died out during this extinction, so their reign was over. Only one branch of the dinosaurs lineage managed to survive, the birds. The birds initially managed to dominate around the world, but with so many empty niches the mammals quickly evolved and managed to out-compete them.
Answer:
False
Explanation:
Battle of San Jacinto, (April 21, 1836), defeat of a Mexican army of about 1,200–1,300 men under Antonio López de Santa Anna by about 900 men (mostly recent American arrivals in Texas) led by Gen. Sam Houston
discovered three waterways in North America that were later named after him: the Hudson Strait, the Hudson Bay and the Hudson River
Answer:
Back in the 1950s and 60s
Explanation:
<em>Segergation And the carcason people didnt want Us african americans to have our rights! They treated My people very badly So we deserved justice and freedom.</em>
Answer:
By 1840, at the height of the Textile Revolution, the Lowell textile mills had recruited over 8,000 workers, with women making up nearly three-quarters of the mill workforce. ... Over time, adult women would displace child labor, which an increasing number of factory owners, such as Lowell, were disinclined to hire.
Explanation: