What impact did the Frankish leader Charles Martel have on Christian Europe's relations with Muslim Spain in the eighth century? He negotiated a clear border between Spain and France.
He stopped the Muslim advance from Spain into France.
He welcomed ambassadors and scholars from Moorish Spain.
He established a Christian kingdom in a corner of northern Spain.

executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts)

explanation:

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.

the answer is alexander graham bell.